Systems and methods for forming fabric panel with moisture indicator

Abstract

A system and method for forming a fabric panel with a moisture indicator is generally disclosed. The system includes a transfer unit (100) configured to receive a functional film (2000) and a lamination unit (200) arranged downstream of the transfer unit (100) and configured to receive a fabric substrate (1000) and laminate it together with the functional film (2000) as a fabric panel. The transfer unit (100) includes a rotatable transfer roller (121) and a fluid holding tank (122) fixedly disposed adjacent to the transfer roller (121), the fluid holding tank (122) configured to store a moisture indicator, which can also act as a hot melt adhesive, such that when the transfer roller (121) is rotated, the moisture indicator is capable of being applied in a pattern including an irregular curve onto a side of the functional film (2000) facing the fabric substrate (1000). During the application of the moisture indicator, the transfer roller (121) and / or the fluid holding tank (122) can be selectively heated such that the temperature of the transfer roller (121) is maintained between 80°C and 100°C and the temperature of the fluid holding tank (122) is maintained greater than 80°C.

Description

Technical Field

[0001] This application generally relates to systems and methods for forming fabric sheet panels with moisture indicators. Background Technology

[0002] A wet indicator can be added to a medical fabric sheet panel in a specific pattern. This wet indicator is a fluid formulation that can be fluidly applied to the fabric sheet panel. When the fluid formulation solidifies, it is transparent. Therefore, the medical fabric sheet panel can be placed on a patient's bed as a sheet. When the bed is dry, the medical fabric sheet panel is indistinguishable from a regular sheet. When the wet indicator is wetted by water, urine, or other liquids, it changes from its transparent state to an opaque state. In the opaque state, the wet indicator can be colored or darkened to visually alert the nurse to an abnormality on the bed. Typically, the wet indicator is fluidly applied in only a few straight lines.

[0003] Similar to medical fabric panels, diapers or trousers are typically formed from several fabric panels sewn or joined together, with moisture indicators added. However, unlike medical fabric panels for medical use, most diapers or trousers are primarily designed for infants. In this case, a pattern consisting only of straight lines may not be visually appealing enough for parents to notice the moisture indicator in its opaque state. Therefore, it is desirable for the moisture indicator pattern to become more complex, making it more visually appealing to parents when it is wet, clearly indicating when to replace a wet diaper with a new one. This is because, in a fixed area, a complex pattern of a moisture indicator in its opaque state will appear more noticeable than a simple pattern (just like one of the straight lines). Of course, the moisture indicator can be constructed such that it colors when wet and remains colorless when dry.

[0004] Complex patterns can include curved lines or irregular curves, or, for example, cute animals, flowers, cartoon characters, or any other interesting graphic. In such cases, traditional methods or systems for applying moisture indicators will not be suitable for complex patterns. This is because curved lines or irregular curves make it difficult to apply the moisture indicator evenly, smoothly, and easily through the transfer roller. Furthermore, the moisture indicator can be used as a hot-melt adhesive to bond the functional film to the fabric sheet panel. If the moisture indicator pattern is too complex, undesirable wrinkles will occur due to inappropriate temperature control of the applied moisture indicator. Wrinkles will significantly affect the quality of the finished fabric sheet panel. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, this application aims to provide an improved system and method for applying a moisture indicator to form a sheet panel, particularly a fabric sheet panel, wherein the moisture indicator is applied evenly, smoothly and easily in a relatively complex pattern (not just straight lines).

[0006] According to one aspect, this application proposes a system for forming a fabric sheet panel having a moisture indicator, comprising: The transfer unit is configured to receive the functional film; and A lamination unit, disposed downstream of the transfer unit and configured to receive a fabric substrate and laminate the fabric substrate together with the functional film to form the fabric sheet panel, wherein... The transfer unit includes a rotatable transfer roller and a fluid holding tank fixedly disposed adjacent to the transfer roller. The fluid holding tank is configured to store a moisture indicator, which can also serve as a hot-melt adhesive, such that when the transfer roller rotates, the moisture indicator can be applied in a pattern including irregular curves to the side of the functional film facing the fabric substrate, and wherein... During the application of the moisture indicator, the transfer roller and / or fluid holding tank can be selectively heated so that the temperature of the transfer roller is maintained between 80°C and 100°C, and the temperature of the fluid holding tank is maintained above 80°C.

[0007] In one embodiment, the moisture indicator to be applied in the transfer unit has a viscosity between 200 CPS and 2000 CPS at 90°C.

[0008] In one embodiment, the transfer unit is configured such that a moisture indicator is applied to the side of the functional membrane at a unit weight of 5 GSM to 25 GSM.

[0009] In one embodiment, the temperature of the transfer roller is maintained between 80°C and 90°C, and the temperature of the fluid holding tank is maintained between 80°C and 130°C.

[0010] In one embodiment, the fabric substrate is a nonwoven fabric substrate, and the functional membrane is a PE membrane.

[0011] In one embodiment, the transfer unit further includes a drive roller that can rotate in the opposite direction to the transfer roller. The PE film received by the transfer unit is clamped and moved between the drive roller and the transfer roller, and the transfer roller has a pattern mirrored with respect to the pattern of the moisture indicator to be applied on its outer surface. Using the mirrored pattern, the moisture indicator is transferred onto the PE film.

[0012] In one embodiment, the pattern of the moisture indicator is shaped into a graphic that includes curved or irregular lines and is of interest to children. For example, the graphic includes, but is not limited to, cute animals such as adorable lions, flowers, cartoon characters, or any other interesting graphic.

[0013] In one implementation, the mirrored pattern is raised or recessed on the outer surface of the transfer roller.

[0014] In one embodiment, the lamination unit includes a pressure roller and an additional drive roller that rotate in opposite directions, such that both the nonwoven fabric substrate and the PE film are received and laminated between the two rollers.

[0015] According to another aspect, this application proposes a method for forming a fabric sheet panel with a moisture indicator, comprising: A system is provided that includes a transfer unit and a lamination unit, the transfer unit being configured to receive a functional film, and the lamination unit being disposed downstream of the transfer unit and configured to receive a fabric substrate and laminate the fabric substrate together with the functional film. Provide a moisture indicator with a viscosity between 200 CPS and 2000 CPS at 90°C and store it in the fluid holding tank of the transfer unit; The functional film is moved through the transfer unit such that the moisture indicator is applied by the transfer rollers of the transfer unit and the fluid holding tank in a pattern including irregular curves to the side of the functional film facing the fabric substrate in the laminating unit; and During the application of the moisture indicator, the temperature of the transfer roller is maintained between 80°C and 100°C, and the temperature of the fluid holding tank (122) is maintained above 80°C.

[0016] In one embodiment, in the delivery module, a moisture indicator is applied to the side of the functional membrane at a unit weight of 5 GSM to 25 GSM.

[0017] In one embodiment, the temperature of the transfer roller is maintained between 80°C and 90°C, and the temperature of the fluid holding tank is maintained between 80°C and 130°C.

[0018] In one embodiment, the fabric substrate is a nonwoven fabric substrate, and the functional membrane is a PE membrane.

[0019] In one embodiment, the pattern of the moisture indicator is shaped into a graphic that includes curved or irregular lines and is of interest to children. For example, the graphic of the pattern includes, but is not limited to, cute animals such as a lion or rabbit, flowers or cartoon characters, or any other interesting graphic.

[0020] Using the above-described technical measures, moisture indicators can be set in relatively complex patterns (e.g., unique and attractive patterns) within sheet panels used to form diapers or trouser-type diapers. The system and method according to this application allow the moisture indicator, in its fluid state, to be smoothly and easily transferred by a transfer roller to support the complex pattern to be applied. Furthermore, according to this application, temperature control during the application of the moisture indicator prevents wrinkles from forming on the functional film to be laminated with the nonwoven fabric sheet, thereby improving the quality of the final fabric sheet panel. Attached Figure Description

[0021] The various aspects and embodiments of this application disclosed herein are described below with reference to the accompanying drawings. It should be understood that the drawings are not necessarily drawn to scale. Items appearing in multiple figures may be denoted by the same reference numerals. For clarity, not every component may be labeled in every figure.

[0022] Figure 1 This is a block diagram schematically illustrating a system for forming a fabric sheet panel provided with a moisture indicator according to an embodiment of this application; Figure 2 This is a perspective view schematically illustrating a portion of a system according to an embodiment of this application; Figure 3A It is a schematic diagram showing the pattern of a moisture indicator in a fabric sheet panel, the moisture indicator being in a dry state; Figure 3B It is a schematic diagram illustrating the pattern of a moisture indicator in a fabric sheet panel, the moisture indicator being in a wetted state; and Figure 4 This is a flowchart schematically illustrating a method for forming a fabric sheet panel provided with a moisture indicator according to an embodiment of this application. Detailed Implementation

[0023] Figure 1 A system according to an embodiment of this application is schematically illustrated, configured to receive a first fabric substrate 1000 from a fabric substrate source 1001 and a second functional membrane 2000 from a membrane source 2001, and then laminate them together to form a fabric sheet panel. The fabric sheet panel is provided with a moisture indicator and can be used to manufacture diapers or trouser-type diapers. In this embodiment, the fabric substrate source 1001 may be a nonwoven fabric substrate roll, and therefore the first fabric substrate 1000 may be a nonwoven fabric substrate; and the membrane source 2001 may be a polyethylene (PE) membrane roll, and therefore the functional membrane 2000 may be a PE membrane.

[0024] According to this embodiment, the system generally includes a transfer unit 100 and a lamination unit 200 disposed downstream of the transfer unit 100. The transfer unit 100 is configured to apply a moisture indicator in a fluid mode onto the PE film. In the context of this application, the moisture indicator may be a pressure-sensitive adhesive or a hot-melt adhesive with humidity / moisture indication function. That is, the moisture indicator can be used in its fluid mode to bond the nonwoven fabric substrate 1000 and the PE film 2000 together, and in its cured mode to indicate the wetting state when wetted (by changing its transparent state to an opaque or colored state).

[0025] The transfer unit 100 is provided with a drive module 110 and a coating module 120. The drive module 110 is configured to receive a PE film 2000 from a PE film roll 2001 and move it toward the lamination unit 200. The coating module 120 is configured to apply a moisture indicator onto the moving PE film in a specific pattern (e.g., a relatively complex pattern, or a pattern not consisting only of straight lines). The coating module 120 may be provided with a heater module (not shown) and a temperature sensing module (not shown), the heater module being configured to selectively heat the moisture indicator to be applied, and the temperature sensing module being configured to detect the temperature of the moisture indicator to be applied. In this system, a central control unit 300 is provided to control the speed at which the PE film 1000 moves through the transfer unit 100. Simultaneously, the central control unit 300 is electrically connected to the heater module and the temperature sensing module, allowing the temperature of the moisture indicator to be applied to be controlled accordingly.

[0026] The lamination unit 200 is provided with a drive module 210 and a pressurizing module 220. The drive module 210 is configured to move the PE film 2000 and the nonwoven fabric substrate 1000 together toward the system outlet (not shown). The pressurizing module 220 is configured to apply pressure between the moving PE film 2000 and the nonwoven fabric substrate 1000, so that they can be laminated together as a final fabric sheet panel. It should be understood that a moisture indicator is applied to the side of the PE film 2000 facing the nonwoven fabric substrate 1000 before the PE film 2000 enters the lamination unit 200. The central control unit 300 is configured to control the applied pressure and the speed at which the PE film 1000 and the nonwoven fabric substrate 2000 move through the lamination unit 200. Therefore, the central control unit 300 can be a computer system having a memory. One or more specific programs can be stored in the memory. For example, the program can be encoded according to the method according to this application, as explained below, and can be called and executed by the computer system when necessary.

[0027] Figure 2A portion of a specific example of a system according to an embodiment of this application is illustrated schematically. Those skilled in the art will understand that the illustrated example is non-limiting and for illustrative purposes only. The system or its units or modules according to this application can be embodied in any other suitable form, provided that the basic principles described below can be achieved. As shown, a PE film roll 2001 is supported for free rotation about a fixed axis 2001a. In this example, the drive module 110 includes a drive roller configured to rotate in the same direction as the PE film roll 2001. Furthermore, the coating module 120 includes a transfer roller 121 and a fluid holding tank 122 fixedly disposed near the transfer roller 121. The transfer roller 121 is configured to have a pattern on its outer surface that is a mirror image of the pattern of a moisture indicator to be fluidly applied to the PE film 2000. For example, the mirror image of the pattern on the transfer roller 121 may be raised or recessed on its outer surface. The fluid holding tank 122 is configured to be filled with a moisture indicator in its fluid mode, and the fluid holding tank has an opening facing the outer surface of the transfer roller 121. The fluid holding tank 122 is configured so as not to affect the rotation of the transfer roller 121. In addition, the fluid holding tank 122 is equipped with a doctor blade (not shown) through which excess moisture indicator on the transfer roller 121 can be returned to the fluid holding tank 122.

[0028] The PE film 2000 is configured to pass between the transfer roller 121 and the drive roller of the drive module 110. For example, the drive roller may be an active roller rotatable about its axis, and the transfer roller 121 may be a driven roller rotatable about its axis. The axes of the two rollers are parallel to each other, and the PE film 2000 passing between the two rollers is configured to press against either of them. A fluid holding tank 122 is disposed above the portion of the PE film 2000 intended to pass between the two rollers. Furthermore, the two rollers in the transfer unit 100 rotate in opposite directions, such that the PE film 2000 can be pulled out from the PE film roll 2001 (during its free rotation) and moved toward the laminating unit 200.

[0029] Viewed in the direction of rotation of the transfer roller 121, the fluid holding tank 122 is positioned upstream of the contact area between the moving PE film 2000 and the transfer roller 121. Therefore, as the transfer roller 121 rotates, its mirrored pattern will fully adhere to the fluid moisture indicator. The adhered fluid moisture indicator will be transferred to the moving PE film 2000 at the contact area (e.g., ...). Figure 2As shown), the moisture indicator is transferred, particularly at the contact area, to the upper side of the moving PE film 2000, allowing the desired pattern of the moisture indicator to exist on the PE film 2000. The fluid holding tank 122 is configured such that the fluid moisture indicator does not fall onto the moving PE film 2000 without passing through the mirror pattern of the transfer roller 121. According to this application, the moisture indicator, which serves as a hot-melt adhesive in the transfer unit 200, is applied at a unit weight of 5 to 25 grams per square meter (GSM).

[0030] According to the example shown, the nonwoven fabric substrate roll 1001 is supported and rotatably about a fixed axis 1001a. The pressure module 220 includes a pressure roller 221, and the drive module 210 includes a drive roller 211. Similar to the two rollers in the transfer unit 100, rollers 221 and 211 are configured such that the nonwoven fabric substrate 1000 can be pulled out of the nonwoven fabric substrate roll 1001 and moved together with a PE film 2000 patterned with a moisture indicator coating between rollers 221 and 211. Here, the drive roller 211 can be the driving roller, and the pressure roller 221 can be the driven roller. According to this application, the nonwoven fabric substrate 1000 separates from the PE film 2000 before passing between the two rollers 221 and 211 in the lamination unit 200. The PE film 2000 moves toward its contact area with the moving nonwoven fabric substrate 1000, such that the sides of the PE film 2000, which has been coated with a moisture indicator, face the moving nonwoven fabric substrate 1000. Therefore, after passing through the lamination unit 100, the PE film 2000 can be laminated together with the nonwoven fabric substrate 1000 to form a fabric sheet panel, which can then be used to manufacture diapers or trouser-type diapers. During lamination, the moisture indicator, acting as a hot-melt adhesive, facilitates a strong bond between the PE film 2000 and the nonwoven fabric substrate 1000.

[0031] Figure 3A The diagram schematically illustrates a pattern of moisture indicator applied to a fabric sheet panel, which is in a dry state and is therefore transparent or nearly transparent. Figure 3BThe diagram schematically illustrates the same pattern of moisture indicator applied to a wet and opaque or colored fabric sheet panel, making it visually noticeable. According to this embodiment, the pattern is displayed as a cute lion, obviously appealing to children. Of course, those skilled in the art will understand that the moisture indicator pattern can be represented in any other suitable form, such as a rabbit, squirrel, cat, or other interesting motif. The pattern used in this application excludes only straight lines or includes both straight lines and curves. Unlike prior art where the moisture indicator pattern only includes a few straight lines, the moisture indicator pattern according to this application is more complex, allowing a larger amount of moisture indicator (as a hot melt adhesive) to be applied to the PE film while maintaining the same PE film dimensions.

[0032] According to this application, the transfer unit 100 is further provided with a heater module, which includes a first heater configured for the transfer roller 121 and a second heater configured for the fluid holding tank 122. For example, the first heater may be disposed within the transfer roller 121 to selectively heat the transfer roller 121 under the control of the central control unit 300. As another example, the second heater may be disposed within the fluid holding tank 122 to selectively heat the moisture indicator (or hot melt adhesive) within the fluid holding tank 122 under the control of the central control unit 300. Furthermore, the transfer unit 100 is also provided with a temperature sensing module, which includes a first temperature sensor configured for the transfer roller 121 and a second temperature sensor configured for the fluid holding tank 122. The first and second temperature sensors can be used to detect the real-time temperatures of the transfer roller 121 and the fluid holding tank 122. It is conceivable that the detected real-time temperature is directly related to or close to the real-time temperature of the moisture indicator (or hot melt adhesive) to be applied to the contact area.

[0033] The inventors recognized that as the pattern of the moisture indicator to be applied becomes more complex, the viscosity and temperature of the moisture indicator to be applied can affect the quality of the final fabric sheet panel. Therefore, some tests were conducted in which different moisture indicators obtained with different formulations were used, their viscosities were varied, and the temperatures of the transfer roller 121 and the fluid holding tank 122 were monitored and controlled.

[0034] Table 1

[0035] Table 1 shows the results of some tests conducted by the inventors. In the tests, the moisture indicator was produced from three different formulations. For example, the formulations tested are commercially available, such as Henkel DM 9860, DM 9819, and 9826 U. The viscosity unit of the moisture indicator (or hot melt adhesive) refers to centipoises (CPS) at 90°C. Performance refers to whether or how the moisture indicator to be applied will affect the final fabric sheet. This can sometimes be determined visually. For example, if the moisture indicator can be applied in complex patterns (e.g., Figure 3B If the pattern shown is applied evenly and clearly onto the PE film, and there are no wrinkles on the PE film, then the performance will be considered "√". Otherwise, the performance will be considered "X". As shown in Table 1, when the viscosity of the moisture indicator is too high (as shown in the last two rows of Table 1), the performance will be poor. For example, when the viscosity of the moisture indicator to be applied (in Formulation 3) reaches 3000 CPS at 90°C and the temperatures of the transfer roller and the can reach 90°C and 130°C respectively, a drawing phenomenon can be observed in the moisture indicator applied through the transfer unit 100, which will negatively affect the final pattern of the moisture indicator applied to the fabric sheet panel. As another example, when the viscosity of the moisture indicator to be applied (in Formulation 3) reaches 3000 CPS at 90°C and the temperatures of the transfer roller and the can reach 110°C and 130°C respectively, scorching of the PE film is observed. This may be caused by the high viscosity of the moisture indicator and the high temperature. In particular, when the temperature of the transfer roller is too high, the PE film will wrinkle due to its natural properties. Of course, when the viscosity of the moisture indicator is too low, the applied moisture indicator will most likely penetrate the positively moving nonwoven fabric substrate 1000 in the lamination unit 200, causing the pressure roller 221 to be contaminated by the penetrated moisture indicator.

[0036] Through all tests (shown and not shown), the inventors recognized that, in order to achieve a preferred application of the moisture indicator with relatively complex patterns, the viscosity of the moisture indicator should be selected between 200 CPS and 2000 CPS at 90°C, the transfer roller 121 should be maintained at a temperature between 80°C and 100°C, and the fluid holding tank 122 should be maintained at a temperature greater than 80°C; alternatively, the transfer roller 121 should be maintained at a temperature between 80°C and 90°C, and the fluid holding tank 122 should be maintained at a temperature between 80°C and 130°C. The inventors found that these temperature ranges ensure that no wrinkles exist on the PE film after the moisture indicator is applied.

[0037] Figure 4A flowchart illustrating a method for forming a fabric sheet panel provided with a moisture indicator by means of a system according to an embodiment of this application is shown schematically. Those skilled in the art will understand that some steps involved in this method can be encoded as a program that can be stored in memory and, if necessary, invoked and executed by the central control unit 300.

[0038] As shown in the figure, at step S10, a moisture indicator is provided as a hot melt adhesive, the viscosity of which is selected between 200 and 2000 CPS at 90°C. At step S20, a system according to an embodiment of this application is provided. At step S30, the second functional film 2000 is allowed to pass through the system's transfer unit 100, such that the moisture indicator is applied onto the second functional film 2000 in a relatively complex pattern excluding any straight lines. During the application of the moisture indicator, the transfer roller 121 of the transfer unit 100 is maintained in a temperature range of 80°C to 100°C, and the fluid holding tank 122 of the transfer unit 100, configured to transfer the moisture indicator onto the second functional film via the transfer roller 121, is maintained at a temperature greater than 80°C; alternatively, the transfer roller 121 is maintained in a temperature range of 80°C to 90°C, and the fluid holding tank 122 is maintained in a temperature range between 80°C and 130°C. According to this application, a relatively complex pattern is configured such that the moisture indicator can be applied by the transfer roller 121 and the fluid holding tank 122 at a unit weight of 5 GSM to 25 GSM. In step S40, the system's lamination unit 200 is configured to receive a second functional film 2000 already coated with the moisture indicator and a first fabric substrate 1000 supplied independently of the second functional film 2000; and to laminate them together such that the applied moisture indicator is located between them to form a fabric sheet panel suitable for producing diapers or trouser-type diapers.

[0039] The various aspects of this disclosure may be used individually, in combination, or in various arrangements not specifically discussed in the foregoing embodiments, and therefore their application is not limited to the details and arrangements of the components set forth in the foregoing description or shown in the accompanying drawings. For example, an aspect described in one embodiment may be combined in any way with aspects described in other embodiments.

[0040] The implementation scheme described herein can be embodied as a method, examples of which have been provided. The actions performed as part of the method can be ordered in any suitable manner. Therefore, implementation schemes in which actions are performed in a different order than those shown can be constructed, which may include performing some actions simultaneously, even if they are shown as sequential actions in the illustrative implementation scheme.

[0041] The use of ordinal terms such as “first,” “second,” and “third” to modify a claim element does not imply any priority, precedence, or order of one claim element relative to another, or the chronological order of actions of the method. Rather, it serves only as a label to distinguish one claim element with a specific name from another element with the same name (but using ordinal terms), thus differentiating the claim elements.

[0042] Furthermore, the wording and terminology used herein are for descriptive purposes and should not be considered restrictive. The use of “including,” “comprising,” or “having,” “containing,” “involving,” and variations thereof in this document is intended to cover the items listed thereafter and their equivalents, as well as any additional items.

[0043] Although this teaching has been described in conjunction with various embodiments and examples, it is not intended to be limited to such embodiments or examples. Rather, as those skilled in the art will understand, this teaching includes various alternatives, modifications, and equivalents. Therefore, the foregoing description and figures are by way of example only.

[0044] This application is not limited to the details of the construction or arrangement of the components set forth in the foregoing description and / or drawings. Various embodiments are provided for illustrative purposes only, and the concepts described herein can be practiced or performed in other ways. Furthermore, the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising,” “including,” “having,” “containing,” “involving,” and variations thereof herein is intended to cover items listed thereafter (or their equivalents) and / or as additional items.

Claims

1. A system for forming a fabric sheet panel having a moisture indicator, comprising: A transfer unit (100) is configured to receive a functional film (2000); as well as A lamination unit (200) is disposed downstream of the transfer unit (100) and configured to receive a fabric substrate (1000) and laminate the fabric substrate together with the functional film (2000) as a fabric sheet panel, wherein... The transfer unit (100) includes a rotatable transfer roller (121) and a fluid holding tank (122) fixedly disposed adjacent to the transfer roller (121). The fluid holding tank (122) is configured to store a moisture indicator, which can also serve as a hot melt adhesive, such that when the transfer roller (121) rotates, the moisture indicator can be applied in a pattern including irregular curves to the side of the functional film (2000) facing the fabric substrate (1000). During the application of the moisture indicator, the transfer roller (121) and / or the fluid holding tank (122) may be selectively heated such that the temperature of the transfer roller (121) is maintained between 80°C and 100°C, and the temperature of the fluid holding tank (122) is maintained above 80°C.

2. The system according to claim 1, wherein, The moisture indicator to be applied in the transfer unit (100) has a viscosity between 200 CPS and 2000 CPS at 90°C.

3. The system according to claim 1 or 2, wherein, The transfer unit (100) is configured such that the moisture indicator is applied to the side of the functional membrane (2000) at a unit weight of 5 GSM to 25 GSM.

4. The system according to claim 3, wherein, The temperature of the transfer roller (121) is maintained between 80°C and 90°C, and the temperature of the fluid holding tank (122) is maintained between 80°C and 130°C.

5. The system according to claim 4, wherein, The fabric substrate (1000) is a nonwoven fabric substrate, and the functional membrane (2000) is a PE membrane.

6. The system according to claim 5, wherein, The transfer unit (100) further includes a drive roller that is rotatable in the opposite direction to the transfer roller (121). The PE film received by the transfer unit (100) is held and moved between the drive roller and the transfer roller (121). The transfer roller (121) has a pattern mirrored with respect to the pattern of the moisture indicator to be applied on its outer surface. The moisture indicator is transferred onto the PE film using the mirrored pattern.

7. The system according to claim 6, wherein, The moisture indicator is shaped into a graphic that includes curved or irregular lines and is of interest to children, such as cute animals, like a cute lion, flowers, or cartoon characters.

8. The system according to claim 7, wherein, The mirrored pattern is raised or recessed on the outer surface of the transfer roller (121).

9. The system according to claim 8, wherein, The lamination unit (200) includes a pressure roller (221) and an additional drive roller (211) that rotate in opposite directions, such that the nonwoven fabric substrate and the PE film are received and laminated between the two rollers.

10. A method for forming a fabric sheet panel having a moisture indicator, comprising: A system is provided, the system comprising a transfer unit (100) configured to receive a functional film (2000) and a lamination unit (200), the lamination unit being disposed downstream of the transfer unit (100) and configured to receive a fabric substrate (1000) and laminate it together with the functional film (2000); A moisture indicator with a viscosity between 200 CPS and 2000 CPS at 90°C is provided and stored in a fluid holding tank (122) of the transfer unit (100); The functional film (2000) is moved through the transfer unit (100) so that a moisture indicator can be applied by the transfer roller (121) and fluid holding tank (122) of the transfer unit (100) in a pattern including irregular curves to the side of the functional film (2000) facing the fabric substrate (1000) in the laminating unit (200). as well as During the application of the moisture indicator, the temperature of the transfer roller (121) is maintained between 80°C and 100°C, and the temperature of the fluid holding tank (122) is maintained above 80°C.

11. The method according to claim 10, wherein, In the transfer unit (100), the moisture indicator is applied to the side of the functional membrane at a unit weight of 5 GSM to 25 GSM.

12. The method according to claim 11, wherein, The temperature of the transfer roller (121) is maintained between 80°C and 90°C, and the temperature of the fluid holding tank (122) is maintained between 80°C and 130°C.

13. The method according to claim 12, wherein, The fabric substrate (1000) is a nonwoven fabric substrate, and the functional membrane (2000) is a PE membrane.

14. The method as described in claim 13, characterized in that, The pattern of the moisture indicator is shaped to include graphics that include curved or irregular lines and are of interest to children, such as cute animals, like a cute lion, flowers, or cartoon characters.

Images