Coated waterproofing membrane and coating apparatus

Abstract

The utility model provides a kind of film-coated waterproof roll and film-coating equipment, belong to waterproof material and waterproof material manufacturing equipment technical field.The film-coated waterproof roll includes the sheet-shaped substrate with self-adhesive layer in one side, the edge film and surface film that are attached to the surface of self-adhesive layer, and the hot melt adhesive layer between self-adhesive layer and edge film;Wherein, the edge film is attached to the first end of self-adhesive layer along the width direction, the surface film is attached to the second end of self-adhesive layer along the width direction, and the surface film extends to the direction of edge film and is overlapped on the surface of the side of edge film away from self-adhesive layer.

Description

Technical Field

[0001] This utility model relates to the technical field of waterproof materials and waterproof material manufacturing equipment, specifically to a coated waterproof membrane and coating equipment. Background Technology

[0002] In the production process of existing self-adhesive bitumen waterproof membranes or self-adhesive butyl rubber waterproof membranes, conventional waterproof membranes only have a face film, or a side film is applied to one side of the waterproof membrane before the face film is applied, and the side film is directly adhered to the bitumen / butyl rubber surface of the waterproof membrane. This structural design makes the self-adhesive waterproof membrane prone to wrinkles during storage. During subsequent construction, the wrinkled areas cannot achieve full adhesion to the substrate, thus forming hidden water seepage channels. This not only causes the overlap edges to fail the impermeability test, but also creates serious waterproofing hazards. At the same time, in low-temperature environments, the bonding of the overlap edges of this type of waterproof membrane requires additional external auxiliary heating equipment, which increases the complexity of the construction process, prolongs the construction period, reduces construction efficiency, and may further affect the bonding reliability of the overlap edges due to uneven heating temperature and insufficient heating, ultimately weakening the overall waterproofing effect. Utility Model Content

[0003] In view of this, the present invention provides a membrane-coated waterproof membrane and a membrane-coating device to solve the problems in the production of self-adhesive bitumen waterproof membranes or self-adhesive butyl rubber waterproof membranes in the prior art. These problems are caused by the side film being directly adhered to the surface of bitumen / butyl rubber, resulting in easy wrinkling during storage, inability to fully adhere the wrinkled areas during construction, forming water seepage channels, and the need for external auxiliary heating at the overlapping edges in low-temperature environments, which affects construction efficiency and waterproofing effect. The specific technical solution provided by the present invention is as follows.

[0004] According to one embodiment of the present invention, a laminated waterproof membrane is provided, comprising a sheet substrate having a self-adhesive layer on one side, a side film and a face film adhered to the surface of the self-adhesive layer, and a hot melt adhesive layer located between the self-adhesive layer and the side film; wherein the side film is adhered to a first end of the self-adhesive layer along the width direction, the face film is adhered to a second end of the self-adhesive layer along the width direction, the face film extends toward the side film and overlaps the surface of the side film away from the self-adhesive layer.

[0005] According to another embodiment of the present invention, a laminating apparatus is provided for producing a laminated waterproof roll as described above, comprising:

[0006] frame;

[0007] The substrate conveying mechanism is installed on the frame and arranged horizontally along the length of the frame. It is used to convey sheet substrates to be coated.

[0008] The edge film supply mechanism is mounted on the frame and located directly above the substrate conveying mechanism. The projection of the edge film supply mechanism on the frame corresponds to the first end of the sheet substrate along the width direction, and is used to supply edge film to the first end of the sheet substrate along the width direction.

[0009] A mask supply mechanism is mounted on the frame and located directly above the substrate conveying mechanism. It is spaced apart from the edge film supply mechanism along the length of the frame and is used to supply a mask to the second end of the sheet substrate along the width direction.

[0010] An adhesive application mechanism, mounted on a frame and located between the edge film supply mechanism and the substrate conveying mechanism, is used to apply hot melt adhesive to the bonding surfaces of the edge film and the sheet substrate; and

[0011] The pressing mechanism, mounted on the frame and located between the adhesive coating mechanism, the face film supply mechanism, and the substrate conveying mechanism, is used to press and fix the edge film, face film, and sheet substrate to obtain a coated waterproof membrane.

[0012] In this embodiment of the invention, by setting a hot melt adhesive layer between the self-adhesive layer and the edge membrane, it can be precisely applied to the overlap of the waterproof membrane during the construction stage. When adjacent waterproof membranes overlap, the hot melt adhesive layer can form a tight sealing interface with the corresponding structure, effectively blocking the water penetration channel and significantly improving the waterproof performance of the overlap. At the same time, the design of the face membrane extending to the edge membrane and overlapping its surface can eliminate the wrinkles and gaps that are easily generated during the storage of the waterproof membrane, avoid the problem of the wrinkled area not being fully adhered during construction, further ensure the impermeability of the overlap edge, and reduce the dependence of the overlap edge on external auxiliary heating equipment in low-temperature environments. It takes into account both construction efficiency and overall waterproof effect, and greatly optimizes the comprehensive performance of the waterproof membrane.

[0013] In this embodiment of the invention, the laminating equipment integrates substrate conveying, edge / face film supply, adhesive application, and pressing mechanisms through a frame. Each mechanism is precisely arranged according to the waterproof membrane production process: the substrate conveying mechanism ensures stable and continuous conveying of the sheet substrate; the edge / face film supply mechanism is spaced along the length of the frame, accurately supplying film to the corresponding ends of the sheet substrate; the adhesive application mechanism applies adhesive to the edge film bonding surface; and the pressing mechanism efficiently completes the pressing and fixing of the multi-layer structure. The entire system achieves integrated and automated production of laminated waterproof membranes, ensuring film bonding accuracy and hot melt adhesive coating effect, improving production efficiency and product quality stability, and meeting the needs of large-scale waterproof membrane production. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the waterproof membrane in an embodiment of this utility model;

[0015] Figure 2 This is a front view of the coating device in an embodiment of this utility model;

[0016] Figure 3 This is a top view of the coating device in an embodiment of the present invention;

[0017] Figure 4 This is a left view of the coating device in an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 10-Laminated waterproof membrane;

[0020] 11-Sheet substrate; 111-Self-adhesive layer; 12-Edge film; 13-Face film; 14-Hot melt adhesive layer;

[0021] 20-Lamination equipment;

[0022] 21-Rack;

[0023] 221-Conveyor roller; 222-Cooling roller;

[0024] 231-Side film unwinding roller; 232-Side film guide roller; 233-Tension controller;

[0025] 241-Mask unwinding roller; 242-Mask guide roller; 243-Position adjustment assembly;

[0026] 251-Glue coating mold; 2511-Glue inlet; 2512-Strip glue outlet; 252-Glue coating cooling roller;

[0027] 261-Pressure roller; 262-Pressure regulating device. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0030] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0031] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). When using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0032] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference in the accompanying drawings and are not intended to limit the scope of protection of this utility model. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this utility model.

[0033] To address the problems of existing self-adhesive bitumen waterproof membranes or self-adhesive butyl rubber waterproof membranes, such as easy wrinkling during storage, water seepage channels formed in the wrinkled areas during construction leading to poor water permeability at the overlapping edges, and the need for external auxiliary heating in low-temperature environments affecting construction efficiency and waterproofing effect, this utility model provides a laminated waterproof membrane and laminating equipment for producing the waterproof membrane. The laminated waterproof membrane provided by this utility model includes a sheet-like substrate with a self-adhesive layer, a side film and a face film adhered to the self-adhesive layer, and a hot melt adhesive layer between the self-adhesive layer and the side film. The face film also overlaps the surface of the side film. The laminating equipment includes a frame, a substrate conveying mechanism, a side film and face film supply mechanism, an adhesive application mechanism, and a pressing mechanism, enabling efficient production of the waterproof membrane.

[0034] Figure 1 This is a cross-sectional schematic diagram of the waterproof membrane in an embodiment of this utility model.

[0035] According to one embodiment of the present invention, a coated waterproof membrane 10 is provided, such as... Figure 1 As shown, it includes a sheet substrate 11 with a self-adhesive layer 111 on one side, a side film 12 and a face film 13 attached to the surface of the self-adhesive layer 111, and a hot melt adhesive layer 14 located between the self-adhesive layer 111 and the side film 12; wherein, the side film 12 is attached to a first end of the self-adhesive layer 111 along the width direction, the face film 13 is attached to a second end of the self-adhesive layer 111 along the width direction, the face film 13 extends toward the side film 12 and overlaps the surface of the side film 12 away from the self-adhesive layer 111.

[0036] In this embodiment of the invention, by setting a hot melt adhesive layer 14 between the self-adhesive layer 111 and the edge membrane 12, the waterproof performance at the overlap of the waterproof membrane can be specifically improved during the construction stage. When the waterproof membrane overlaps, the hot melt adhesive layer 14 can form a tight seal with the corresponding structure of the adjacent waterproof membrane, blocking the water penetration path. At the same time, the design of the face membrane 13 extending to the edge membrane 12 and overlapping its surface can eliminate the wrinkles and gaps that are easily generated during the storage of the waterproof membrane, avoid the problem of the wrinkled area not being fully adhered during construction, further ensure the impermeability of the overlap edge, and reduce the dependence of the overlap edge on external auxiliary heating equipment in low temperature environments. It takes into account both construction efficiency and overall waterproof effect, and significantly optimizes the performance of the waterproof membrane.

[0037] In some embodiments, the hot melt adhesive layer 14 is located at the first end of the self-adhesive layer 111 along its width direction and within the projection area of ​​the edge membrane 12 on the self-adhesive layer 111. This allows the hot melt adhesive to be precisely applied to the critical areas of the waterproof membrane overlap, preventing overlap sealing failure caused by hot melt adhesive layer misalignment and ensuring a tight waterproof interface between the hot melt adhesive layer and the adjacent waterproof membrane during construction. The width of the hot melt adhesive layer 14 is 5-10% of the total width of the membrane-coated waterproof membrane 10. This satisfies the waterproof performance requirements at the overlap while avoiding material waste and cost increases caused by excessive use of adhesive. It optimizes resource allocation while ensuring waterproof performance, further improving the practicality and economy of the waterproof membrane.

[0038] For example, the width of the sheet substrate 11 can be set to 1-1.2 mm, and the width of the hot melt adhesive layer 14 is correspondingly designed to be 8-10 mm. The width of the edge film 12 is slightly larger than the width of the hot melt adhesive layer 14 to ensure that the hot melt adhesive layer 14 can be completely covered by the edge film 12. After the face film 13 is attached to the self-adhesive layer 111 of the sheet substrate 11, it extends towards the edge film 12 and overlaps the side surface of the edge film 12 away from the self-adhesive layer 111, forming an interlayer overlap structure. The materials of the edge film 12 and the face film 13 can be selected independently, such as polyethylene terephthalate (PET) or polyethylene (PE). The specific material is not limited in this utility model and can be flexibly adapted according to actual production needs.

[0039] Figure 2 This is a front view of the coating device in an embodiment of this utility model; Figure 3 This is a top view of the coating device in an embodiment of the present invention; Figure 4 This is a left view of the coating device in an embodiment of this utility model.

[0040] According to another embodiment of the present invention, a laminating device 20 is provided for producing a laminated waterproof roll material as described above, such as... Figures 2-4 As shown, it includes:

[0041] Rack 21;

[0042] The substrate conveying mechanism is installed on the frame 21 and is arranged horizontally along the length of the frame 21. It is used to convey sheet substrates to be coated.

[0043] The edge film supply mechanism is installed on the frame 21 and located directly above the substrate conveying mechanism. The projection of the edge film supply mechanism on the frame 21 corresponds to the first end of the sheet substrate along the width direction, and is used to supply the edge film to the first end of the sheet substrate along the width direction.

[0044] The mask supply mechanism is mounted on the frame 21 and located directly above the substrate conveying mechanism. It is spaced apart from the edge film supply mechanism along the length of the frame 21 and is used to supply the mask to the second end of the sheet substrate along the width direction.

[0045] An adhesive application mechanism, mounted on frame 21 and located between the edge film supply mechanism and the substrate conveying mechanism, is used to apply hot melt adhesive to the bonding surface where the edge film contacts the sheet substrate; and

[0046] The pressing mechanism, mounted on the frame 21 and located between the adhesive coating mechanism, the face film supply mechanism and the substrate conveying mechanism, is used to press and fix the side film, the face film and the sheet substrate to obtain the coated waterproof membrane.

[0047] In this embodiment of the invention, the various functional mechanisms are integrated through the frame 21. The substrate conveying mechanism is horizontally arranged along the length of the frame 21 to ensure stable and continuous conveying of the sheet substrate. The edge film supply mechanism corresponds to the first end of the sheet substrate, and the face film supply mechanism is spaced along the length of the frame 21 to the second end of the sheet substrate, enabling precise supply of film material to designated positions on the sheet substrate. The adhesive application mechanism precisely applies adhesive to the edge film bonding surface, and the pressing mechanism efficiently completes the pressing and fixing of the multi-layer structure. Each mechanism is precisely laid out according to the waterproof membrane production process, achieving integrated and automated production of laminated waterproof membranes, ensuring the accuracy of membrane bonding and hot melt adhesive coating, improving production efficiency and product quality stability, and meeting the needs of large-scale waterproof membrane production.

[0048] In some embodiments, the substrate delivery mechanism includes:

[0049] At least three conveying rollers 221 are arranged horizontally along the length of the frame 21. The top surfaces of each conveying roller are coplanar, forming a horizontal support plane for supporting and driving the continuous movement of the sheet substrate; and

[0050] At least one cooling roller 222 is located at the end of the substrate conveying mechanism and between two adjacent conveying rollers 221. The top roller surface of the cooling roller 222 is coplanar with the support plane formed by the conveying rollers 221. The cooling roller 222 is provided with a cooling liquid channel for cooling the laminated waterproof membrane after pressing.

[0051] In this embodiment of the invention, at least three conveying rollers 221 arranged horizontally along the length of the frame 21 form a stable horizontal support plane through their coplanar top surfaces. This allows them to smoothly support and drive the sheet substrate to move continuously, preventing offset or wrinkles during substrate transport and providing a precise substrate positioning basis for subsequent processes such as film lamination and gluing. Meanwhile, the cooling rollers 222, located at the end of the conveying process and between adjacent conveying rollers 221, not only have their top roller surfaces coplanar with the support plane, allowing them to participate in the conveying of the sheet substrate to ensure production continuity, but also rapidly cool the laminated waterproof membrane through internal cooling liquid channels. This accelerates the shaping of the waterproof membrane and prevents structural deformation caused by residual heat. By combining the conveying function with enhanced cooling effect, the product quality and production efficiency are further improved.

[0052] In some embodiments, the side membrane supply mechanism includes:

[0053] The side film unwinding roller 231 is used to hold the side film roll and provide basic support for the side film roll;

[0054] At least one edge film guide roller 232 is located between the edge film unwinding roller 231 and the adhesive coating mechanism. The edge film output from the edge film unwinding roller 231 is routed around the edge film guide roller 232 to change its conveying direction and then conveyed to the first end of the sheet substrate along its width direction; and

[0055] The tension controller 233 is coaxially mounted with the side film unwinding roller 231. By rotating synchronously with the side film unwinding roller 231, it applies reverse tension to the side film unwinding process to stabilize and control the conveying tension of the side film.

[0056] In this embodiment of the invention, the side film unwinding roller 231 provides a stable foundation support for the side film roll, ensuring the initial stability of the side film unwinding state; the side film guide roller 232, by changing the side film conveying direction, can accurately guide the side film to the first end of the sheet substrate along the width direction, ensuring the accuracy of the bonding position between the side film and the sheet substrate, laying a precise positioning foundation for subsequent gluing and pressing processes; the tension controller 233, coaxially mounted with the side film unwinding roller 231, can apply reverse tension through synchronous rotation, stabilizing the side film conveying tension in real time, avoiding the side film from becoming loose, wrinkled, or overstretched due to tension fluctuations, ensuring that the side film remains flat during conveying and gluing, further improving the bonding quality between the side film and the substrate, and ensuring the stability of the final product performance.

[0057] In some specific embodiments, the tension controller 233 is a magnetic tension controller. Two side film unwinding rollers 231 are included to form a dual-station unwinding structure.

[0058] In this embodiment of the utility model, a magnetic tension controller 233 is adopted, which can stably control the reverse damping force by precisely adjusting the excitation current. It can adapt to the tension fluctuations caused by the change in roll diameter during the unwinding process of the side film in real time, ensuring that the tension of the side film is always within the process requirements range, effectively avoiding the loosening and wrinkling of the side film or excessive stretching and damage, and ensuring the quality stability of the side film coating and bonding. At the same time, two side film unwinding rollers 231 are set to form a dual-station unwinding structure. When the side film roll of one unwinding roller is exhausted, it can be quickly switched to the other full roll unwinding roller to continue feeding without stopping the machine to change the roll, which greatly reduces the production interruption time, significantly improves the continuity of side film supply, and adapts to the needs of large-scale and high-efficiency production of waterproof membrane.

[0059] In some embodiments, the mask supply mechanism includes:

[0060] The mask unwinding roller 241 is located directly above the substrate conveying mechanism and along the length of the frame 21 on the side of the edge film supply mechanism away from the pressing mechanism. It is used to place the mask roll and provide basic support for the mask roll.

[0061] At least one mask guide roller 242 is located between the mask unwinding roller 241 and the pressing mechanism, and below the edge film supply mechanism and the adhesive coating mechanism. The mask output from the mask unwinding roller 241 passes around the mask guide roller 242 to change its conveying direction, and is then conveyed to the second end of the sheet substrate along its width direction; and

[0062] The position adjustment component 243 is located between the mask unwinding roller 241 and the frame 21. It adjusts the lateral position of the mask relative to the sheet substrate by changing the position of the mask unwinding roller 241 relative to the frame 21.

[0063] In this embodiment of the invention, the mask unwinding roller 241 is located on the side of the edge film supply mechanism away from the pressing mechanism along the length of the frame 21. Combined with its layout directly above the substrate conveying mechanism, it provides stable support for the mask roll while avoiding interference with the edge film supply and adhesive application processes. The mask guide roller 242, by changing the conveying direction and adapting to the space below the edge film supply mechanism and adhesive application mechanism, can accurately guide the mask to the second end of the sheet substrate along the width direction, ensuring accurate mask bonding. The position adjustment component 243 can adjust the lateral position of the mask in real time by adjusting the position of the mask unwinding roller 241, ensuring the overlap accuracy of the mask with the sheet substrate and the edge film, effectively avoiding waterproof gaps caused by positional deviations, and further ensuring the overall waterproof performance and production quality stability of the waterproof roll.

[0064] In some embodiments, the adhesive application mechanism includes:

[0065] The adhesive coating mold 251, located between the edge film supply mechanism and the pressing mechanism, includes an inlet 2511 connected to the hot melt adhesive supply device, an adhesive flow channel, and a strip-shaped outlet 2512 adapted to the width of the edge film. Molten hot melt adhesive enters the adhesive flow channel through the inlet 2511 and is continuously extruded through the strip-shaped outlet 2512, uniformly coating the edge film onto the bonding surface where it contacts the sheet substrate; and

[0066] The adhesive cooling roller 252 is located between the adhesive coating mold 251 and the pressing mechanism, and rolls in contact with the non-adhesive surface of the edge film. The adhesive cooling roller 252 has a cooling liquid channel inside, which is used to quickly cool and shape the edge film after hot melt adhesive is applied.

[0067] In this embodiment of the invention, the adhesive coating mold 251, through an inlet 2511 connected to the hot melt adhesive supply device, an internal adhesive flow channel, and a strip-shaped outlet 2512 adapted to the width of the edge film, can continuously and uniformly coat the molten hot melt adhesive onto the bonding surface of the edge film, avoiding problems such as excessively thick or thin adhesive layers or adhesive breaks, and ensuring that the hot melt adhesive layer is accurately applied to the bonding area between the edge film and the substrate. The adhesive coating cooling roller 252, through rolling contact with the non-bonding surface of the edge film, quickly cools the edge film after adhesive coating by means of the internal cooling liquid flow channel, so that the hot melt adhesive is quickly set to a semi-cured state, which not only prevents the adhesive material from shifting and contaminating before pressing, but also ensures the stability of the adhesive layer structure during subsequent pressing, further improving the bonding quality between the edge film and the substrate and the waterproof performance of the waterproof membrane overlap.

[0068] In some specific embodiments, the hot melt adhesive supply device includes:

[0069] A hot melt adhesive storage tank, connected to an adhesive inlet 2511 via an adhesive delivery pipe, is used to store and supply hot melt adhesive to the coating mold 251; and

[0070] The heating component, located on the glue delivery pipe, is used to heat the hot melt glue to a molten state, ensuring that the strip-shaped glue outlet 2512 of the glue application mold 251 continuously dispenses glue.

[0071] In this embodiment of the invention, the hot melt adhesive storage tank is connected to the glue inlet 2511 of the coating mold 251 via a glue delivery pipe, which can continuously and stably supply hot melt adhesive raw materials for the coating process, avoiding production interruptions caused by glue material shortages and ensuring coating continuity. The heating component installed on the glue delivery pipe can heat the hot melt adhesive to a molten state in real time, ensuring that the hot melt adhesive always maintains the process characteristics of uniform flow, effectively preventing the hot melt adhesive from clogging the pipe or glue outlet due to cooling and solidification during the glue delivery process, thereby ensuring continuous and stable glue delivery from the strip-shaped glue outlet 2512 of the coating mold 251, providing a reliable guarantee for the formation of a uniform adhesive layer on the edge film bonding surface, and further improving the coating quality and production stability.

[0072] For example, the coolant used by the cooling roller 222 and the adhesive-coating cooling roller 252 can be flexibly selected according to their cooling requirements and operating conditions. They can use the same type of coolant, or different types of coolant can be selected based on actual cooling efficiency, cost control, or process adaptability requirements. Both options are within the scope of this utility model. The specific type of coolant can be selected from common industrial cooling media such as water, ethylene glycol aqueous solution, and propylene glycol aqueous solution. The coolant composition or concentration can be adjusted to meet cooling requirements under different ambient temperatures. This utility model does not limit the specific type of coolant and can flexibly determine it according to the actual production scenario.

[0073] In some embodiments, the pressing mechanism includes:

[0074] Pressure roller 261 includes an active pressure roller and a driven pressure roller arranged horizontally and correspondingly. The active pressure roller is located above the substrate conveying mechanism, and the driven pressure roller is located below the substrate conveying mechanism. A pressing gap is formed between the active and driven pressure rollers to allow the side film, the face film, and the sheet substrate to pass through. This gap is used to press and fix the side film, the face film, and the sheet substrate after hot melt adhesive coating to obtain a laminated waterproof roll material.

[0075] The pressure regulating device 262 is connected to the active pressure roller. By driving the active pressure roller to move up and down relative to the driven pressure roller, the distance between the active and driven pressure rollers is changed, the pressure at the pressing gap is adjusted, and thus the pressing intensity is controlled.

[0076] In this embodiment of the invention, the active and driven pressure rollers, arranged horizontally and vertically, form a suitable pressing gap to precisely clamp and press the coated side film, face film, and sheet substrate, ensuring a tight and fixed fit. This provides a guarantee for the formation of a stable layered structure in the waterproof membrane. The pressure regulating device 262, connected to the active pressure roller, can change the roller spacing by driving the active pressure roller to move up and down, flexibly adjusting the pressure at the pressing gap. It can adapt the pressing strength according to different process requirements such as the thickness of the waterproof membrane and the material of the membrane, avoiding weak interlayer bonding due to insufficient pressure and preventing damage to the sheet substrate or membrane due to excessive pressure, further ensuring the pressing quality and product performance stability.

[0077] For example, the width of the rollers used in each mechanism of this utility model is adapted to the functional requirements: the rollers in the substrate conveying mechanism have a width that exceeds the width of the sheet substrate by 10-20cm on both sides to ensure stable and comprehensive support and conveying of the sheet substrate; the rollers used in the edge film supply mechanism and the gluing mechanism have a width that exceeds the width of the edge film by 5-10cm on both sides to meet the requirements of the edge film conveying and gluing processes; and the rollers used in the face film supply mechanism and the pressing mechanism have the same width specifications as the rollers in the substrate conveying mechanism to ensure the continuity and adaptability of the conveying of sheet substrates and film materials between each process.

[0078] The embodiments of the present invention have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the present invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the present invention, and all such substitutions and modifications should fall within the scope of the present invention.

Claims

1. A coated waterproof membrane, characterized in that, It includes a sheet substrate with a self-adhesive layer on one side, a side film and a face film adhered to the surface of the self-adhesive layer, and a hot melt adhesive layer located between the self-adhesive layer and the side film; The side film is attached to the first end of the self-adhesive layer along the width direction, and the face film is attached to the second end of the self-adhesive layer along the width direction. The face film extends towards the side film and overlaps the surface of the side film away from the self-adhesive layer.

2. The coated waterproof membrane according to claim 1, characterized in that, The hot melt adhesive layer is located at the first end of the self-adhesive layer along the width direction, and is located within the projection area of ​​the edge film on the self-adhesive layer; The width of the hot melt adhesive layer is 5-10% of the total width of the coated waterproof membrane.

3. A laminating apparatus for producing a laminated waterproof membrane as described in claim 1 or 2, characterized in that, include: frame; A substrate conveying mechanism is installed on the frame and arranged horizontally along the length of the frame for conveying sheet substrates to be coated; A side film supply mechanism is installed on the frame and located directly above the substrate conveying mechanism. The projection of the side film supply mechanism on the frame corresponds to the first end of the sheet substrate along the width direction, and is used to supply side film to the first end of the sheet substrate along the width direction. A mask supply mechanism is installed on the frame and located directly above the substrate conveying mechanism. It is spaced apart from the side film supply mechanism along the length of the frame and is used to supply a mask to the second end of the sheet substrate along the width direction. An adhesive application mechanism, mounted on the frame and located between the edge film supply mechanism and the substrate conveying mechanism, is used to apply hot melt adhesive to the bonding surface of the edge film in contact with the sheet substrate; and A pressing mechanism, mounted on the frame and located between the adhesive coating mechanism, the face film supply mechanism and the substrate conveying mechanism, is used to press and fix the side film, the face film and the sheet substrate to obtain a coated waterproof roll.

4. The coating equipment according to claim 3, characterized in that, The substrate conveying mechanism includes: At least three conveying rollers are arranged horizontally along the length of the frame, with the top surfaces of each roller being coplanar, forming a horizontal support plane to support and drive the sheet substrate to move continuously; and At least one cooling roller is located at the end of the substrate conveying mechanism and between two adjacent conveying rollers. The top roller surface of the cooling roller is coplanar with the support plane formed by the conveying rollers. The cooling roller is provided with a cooling liquid channel for cooling the laminated waterproof membrane after pressing.

5. The coating equipment according to claim 3, characterized in that, The edge membrane supply mechanism includes: Side film unwinding roller, used to hold the side film roll and provide basic support for the side film roll; At least one edge film guide roller is located between the edge film unwinding roller and the adhesive coating mechanism. The edge film output from the edge film unwinding roller is routed around the edge film guide roller to change its conveying direction and then conveyed to the first end of the sheet substrate along its width direction; and The tension controller is coaxially mounted with the side film unwinding roller. It applies reverse tension to the side film unwinding process by rotating synchronously with the side film unwinding roller, thereby stabilizing and controlling the conveying tension of the side film.

6. The coating equipment according to claim 5, characterized in that, The tension controller is a magnetic tension controller; and / or The side film unwinding rollers include two, forming a dual-station unwinding structure.

7. The coating equipment according to claim 3, characterized in that, The mask supply mechanism includes: The mask unwinding roller is located directly above the substrate conveying mechanism and along the length of the frame on the side of the edge film supply mechanism away from the pressing mechanism. It is used to place the mask roll and provide basic support for the mask roll. At least one mask guide roller is located between the mask unwinding roller and the pressing mechanism, and below the edge film supply mechanism and the adhesive coating mechanism. The mask output from the mask unwinding roller passes around the mask guide roller to change its conveying direction, and is then conveyed to the second end of the sheet substrate along its width direction; and A position adjustment component is located between the mask unwinding roller and the frame, and adjusts the lateral position of the mask relative to the sheet substrate by changing the position of the mask unwinding roller relative to the frame.

8. The coating equipment according to claim 3, characterized in that, The adhesive application mechanism includes: A coating mold, located between the edge film supply mechanism and the pressing mechanism, includes an inlet connected to a hot melt adhesive supply device, an adhesive flow channel, and a strip-shaped outlet adapted to the width of the edge film. Molten hot melt adhesive enters the adhesive flow channel through the inlet and is continuously extruded through the strip-shaped outlet, uniformly coating the bonding surface of the edge film in contact with the sheet substrate. The adhesive cooling roller is located between the adhesive coating mold and the pressing mechanism, and rolls in contact with the non-adhesive surface of the edge film. The adhesive cooling roller has a cooling liquid channel inside, which is used to quickly cool and shape the edge film after the hot melt adhesive is applied.

9. The coating equipment according to claim 8, characterized in that, The hot melt adhesive supply device includes: A hot melt adhesive storage tank, connected to the adhesive inlet via an adhesive delivery pipe, is used to store and supply hot melt adhesive to the coating mold; and A heating component, located on the glue delivery pipe, is used to heat the hot melt adhesive to a molten state, ensuring continuous glue dispensing from the strip-shaped glue outlet of the glue coating mold.

10. The coating equipment according to claim 3, characterized in that, The pressing mechanism includes: The pressure roller includes an active pressure roller and a driven pressure roller arranged horizontally and correspondingly, wherein the active pressure roller is located above the substrate conveying mechanism, and the driven pressure roller is located below the substrate conveying mechanism. A pressing gap is formed between the active and driven pressure rollers to allow the side film, the front film, and the sheet substrate to pass through, for pressing and fixing the side film, the front film, and the sheet substrate after hot melt adhesive coating to obtain a coated waterproof roll material; and A pressure regulating device is connected to the active pressure roller. By driving the active pressure roller to move up and down relative to the driven pressure roller, the distance between the active and driven pressure rollers is changed, thereby adjusting the pressure at the pressing gap and controlling the pressing intensity.

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