Production method and production device of flexible sheet

Abstract

The invention discloses a production method and a production device for producing a flexible sheet of an enhanced waterproof and protective integrated waterproof roll. The method comprises the following steps: respectively conveying an asphalt sizing material to a primary blanking point and a secondary blanking point through pipelines; performing primary blade coating, namely uniformly blade-coating the asphalt sizing material on the isolating membrane to form a sizing material layer on one side of the isolating membrane; the second blade coating module is used for pressing one surface coated with the sizing material layer and the tire base material together through a compression roller and conveying to the lower part of the secondary blanking point; performing secondary blade coating to form a sizing material layer on the other side; and the gridding cloth is slightly pressed on the sizing material layer on the other side through the extrusion roller pair, and finally a finished product of the flexible sheet is formed. The protective layer formed by the sheet manufactured through the method has the waterproof and protective integrated effect, the problems that a traditional thick protective layer is long in construction period and high in cost are solved, the gridding cloth and the sheet are combined into a whole, and the construction step that the gridding cloth needs to be additionally arranged is omitted.

Description

Technical Field

[0001] The invention belongs to the field of building waterproofing, and in particular relates to a production method and a production device for a flexible sheet material used in producing an integrated waterproof protection roll material. Background Art

[0002] During the construction of waterproof membrane, after it is laid on the concrete base, in order to avoid damage to the waterproof membrane during the later construction process, it is usually necessary to construct a protective layer on the surface of the waterproof membrane. In order to improve the anti-cracking performance, a layer of mesh cloth can be added between the waterproof membrane and the protective layer. Therefore, in the traditional waterproof construction process, there is often an extra step of laying the mesh cloth. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a method and a device for producing a flexible sheet. The produced flexible sheet is combined with a mesh cloth into an integrated structure, the construction is simpler and more convenient, and the anti-cracking performance is better.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A method for producing a flexible sheet, comprising the following steps

[0006] Step S1, processing the asphalt raw material in a reaction tank to obtain molten asphalt rubber, and transporting the asphalt rubber to a primary unloading point and a secondary unloading point through pipelines;

[0007] Step S2, primary scraping: the isolation film is transferred to the first scraping module through the guide roller, and the first scraping module evenly scrapes the asphalt rubber material flowing out of the primary feeding point on one side of the isolation film to form a rubber material layer on one side;

[0008] Step S3, pressing the side of the isolation film coated with the rubber layer together with the tire base material through a pressing roller, and transferring it to the second scraping module below the secondary unloading point;

[0009] Step S4, secondary scraping: the second scraping module scrapes the asphalt rubber material flowing out of the secondary feeding point evenly on the other side of the tire base material to form a rubber layer on the other side;

[0010] Step S5, lightly pressing the mesh cloth onto the rubber layer on the other side of the tire base through a pair of extrusion rollers, and finally forming a finished flexible sheet;

[0011] Step S5, immersing the formed flexible sheet into a cooling water pool for cooling.

[0012] The asphalt processing in step S1 is specifically to place the base asphalt in a reaction tank, control the temperature at 120°C to 160°C, add the modifier and softener and raise the temperature to 180°C to 210°C, add talcum powder and other fillers and functional additives after mixing and modifying for 1.0 to 5 hours, and mix evenly to obtain the modified asphalt rubber.

[0013] The production equipment of flexible sheets includes an isolation film traction system, a tire base traction system, a mesh cloth traction system, a first scraping mechanism for scraping modified asphalt rubber on the isolation film to form a lower rubber layer, a pressure roller for compounding the tire base material on the lower rubber layer, a second scraping mechanism for scraping modified asphalt rubber on the surface of the tire base material to form an upper rubber layer, and a shaping mechanism for compounding the mesh cloth on the surface of the upper rubber layer.

[0014] The isolation film traction system, tire base traction system and mesh cloth traction system respectively include a discharge roller and a plurality of guide rollers for traction of the isolation film, tire base material or the mesh cloth to the downstream direction.

[0015] The first scraping mechanism is arranged downstream of the conveying direction of the isolation film traction system, and includes a group of first heating oil-coating rollers and first cooling rollers that are arranged adjacent to each other and rotate in opposite directions; high-temperature heat-conducting oil is introduced into the interior of the first heating oil-coating roller, and cooling water is introduced into the interior of the first cooling roller. A first feed hopper is installed at the feed end and below the primary unloading point.

[0016] The second scraping mechanism is arranged in the downstream direction of the tire base traction system and the first scraping mechanism, and includes a group of second heating oil-coating rollers and second cooling rollers that are adjacent to each other and rotate in opposite directions. High-temperature heat-conducting oil is introduced into the interior of the second heating oil-coating roller, and cooling water is introduced into the interior of the second cooling roller. A feed hopper is installed at the feed end and below the secondary unloading point.

[0017] The shaping mechanism is arranged in the downstream direction of the mesh cloth traction system and the second scraping mechanism, and comprises a pair of upper shaping rollers and lower shaping rollers which are arranged adjacent to each other and rotate towards each other.

[0018] After adopting the above technical solution, the present invention has the following advantages compared with the background technology:

[0019] 1. During construction, the flexible sheet made by the present invention is sprayed to form an interface protective layer of not less than 3 mm. The thin protective layer can protect the flexible sheet in time, avoid subsequent construction damage, isolate the erosion of the external environment, and delay aging of the flexible sheet during use, thereby extending its service life. Moreover, compared with the traditional method of laying 50 mm thick fine stone concrete as a protective layer, the integrated waterproof protection structure shortens the waterproof construction period and greatly reduces the cost.

[0020] 2. The convex points arranged on both sides of the mesh cloth can be embedded in the rubber layer and the interface protection layer of the sheet respectively. The mesh cloth acts as a bridge connecting the upper and lower parts, connecting the interface protection layer and the sheet.

[0021] 3. The mesh cloth plays the role of skeleton support during the construction of the interface protection layer and has good anti-cracking performance. The interface protection layer solidified on the surface of the mesh cloth also increases the impact resistance. The mesh cloth and the flexible sheet are integrated. The mesh cloth is laid at the same time as the sheet, eliminating the construction step of laying the mesh cloth separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the flexible sheet produced by the present invention;

[0023] Figure 2 It is a structural schematic diagram of the production device of the present invention;

[0024] 1'-Isolation film 2'-Tire base material 3'-Grid cloth 4'-Lower rubber layer 5'-Upper rubber layer 6'-Bump DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Example

[0027] The present invention discloses a method for producing a flexible sheet, comprising the following steps:

[0028] Step S1, processing the asphalt raw material in a reaction tank to obtain molten asphalt rubber, and transporting the asphalt rubber to a primary unloading point and a secondary unloading point through pipelines;

[0029] The specific asphalt processing is to place the base asphalt in a reaction tank, control the temperature at 120℃~160℃, add the modifier and softener and raise the temperature to 180~210℃, add talcum powder and other fillers and functional additives after mixing and modifying for 1.0~5h, and mix evenly to obtain the modified asphalt rubber.

[0030] Step S2: One-time scraping

[0031] The isolation film 1' is transferred to the first scraping module through the guide roller, and the first scraping module scrapes the asphalt rubber material flowing out from the primary feeding point evenly on one side of the isolation film to form a lower rubber material layer 4' on one side;

[0032] Step S3, pressing the side of the isolation film 1' coated with the lower rubber layer 4' together with the tire base material 2' through a pressing roller, and transferring it to the second scraping module below the secondary material discharge point;

[0033] Step S4: Secondary scraping

[0034] The second scraping module scrapes the asphalt rubber material flowing out from the secondary feeding point evenly on the other side of the tire base material 2' to form an upper rubber layer 5' on the other side;

[0035] Step S5, lightly pressing the mesh cloth 3' onto the upper rubber layer 5' through a pair of extrusion rollers, and finally forming a finished flexible sheet;

[0036] Step S5, immersing the formed flexible sheet into a cooling water pool for cooling.

[0037] See also Figure 2 As shown, the present invention also discloses a production device for producing flexible sheets according to the above method, which includes an isolation film traction system, a first scraping mechanism 2, a tire base traction system, a second scraping mechanism 4, a mesh cloth traction system and a shaping mechanism 5.

[0038] The separator film pulling system includes a feeding roller for feeding the separator film 1' and a multi-pass guide roller for guiding the separator film 1' to the first scraping mechanism 2 downstream. The separator film 1' is pulled to the first scraping mechanism 2 for the first feeding and shaping. Both sides of the separator film 1' are coated with silicone oil.

[0039] The first scraping mechanism 2 is arranged downstream in the conveying direction of the isolation film traction system, and includes a group of first heating oiling rollers 21 and first cooling rollers 22 which are arranged adjacent to each other and rotate in opposite directions; high-temperature heat-conducting oil is introduced into the interior of the first heating oiling roller 21 to heat the asphalt rubber, and cooling water is introduced into the interior of the first cooling roller 22 for cooling. A first feeding hopper 23 with a bottom outlet is installed at the feeding end of the first scraping mechanism 2 and is located below the primary unloading point. The molten modified asphalt rubber flows into the first feeding hopper 23 from the primary unloading point and is poured onto the isolation film 1' passing below for the first unloading and shaping. The isolation film 1' with the modified asphalt rubber on the surface is then conveyed from the gap between the first heating oiling roller 21 and the first cooling roller 22. The first heating oiling roller 21 can scrape off excess rubber at the same time during the rotation process, thereby achieving uniform scraping of the modified asphalt rubber and forming a lower rubber layer 4' attached to the isolation film 1'.

[0040] The tire base traction system is arranged in the downstream direction of the first scraping mechanism 2, and includes a discharge roller for discharging the tire base material 2' and a plurality of guide rollers for guiding the tire base material 2' to be transported downstream. The tire base material 2' and the isolation film 1' coated with the lower rubber layer 4' are guided to the pressure roller 31 together, and the tire base material 2' is compounded on the top of the lower rubber layer 4' at the pressure roller 31. After compounding, it is guided to the downstream second scraping mechanism 4 through the guide roller 32 for the second material unloading and shaping.

[0041] The second scraping mechanism 4 also includes a group of second heating oiling rollers 41 and second cooling rollers 42 which are arranged adjacent to each other and rotate in opposite directions. High-temperature heat-conducting oil is introduced into the interior of the second heating oiling roller 41 to heat the asphalt rubber, and cooling water is introduced into the interior of the second cooling roller 42 for cooling. A feeding hopper with a bottom outlet is installed at the feeding end of the second scraping mechanism 4 and is located below the secondary unloading point. The molten modified asphalt rubber flows into the feeding hopper from the secondary unloading point and is poured onto the tire base material 2' passing below for the second unloading and shaping. It is then transmitted from the gap between the second heating oiling roller 41 and the second cooling roller 42. The second heating oiling roller 41 can scrape off excess rubber at the same time during the rotation process, thereby achieving uniform scraping of the modified asphalt rubber and forming an upper rubber layer 5' attached to the tire base material 2', completing the transmission of the sheet material after the second unloading and shaping to the shaping mechanism 5 in the downstream direction.

[0042] The mesh cloth pulling system includes a feeding roller for feeding out the mesh cloth 3' and a plurality of guide rollers for guiding the mesh cloth 3' to be transferred to the downstream shaping mechanism 5. The mesh cloth 3' is pulled to the shaping mechanism 5 for composite shaping.

[0043] The shaping mechanism 5 comprises a pair of upper shaping rollers 51 and lower shaping rollers 52 which are arranged adjacent to each other and rotate in opposite directions. A gap is left between the upper shaping rollers 51 and the lower shaping rollers 52. The sheet and the mesh cloth 3' pass through the two shaping rollers together, so that the mesh cloth 3' is compounded on the upper rubber layer 5' of the sheet, and finally a flexible sheet is made.

[0044] The mesh cloth 3' used in the present invention is made of an integrally die-cast polymer material, and convex points 6' are formed on both sides of the intersection of each mesh on the mesh surface, and the height of the convex points 6' is 1-2 mm.

[0045] The flexible sheet material prepared by the method of the present invention is Figure 1As shown, during waterproofing construction, a layer of cement slurry is sprayed on the surface of the mesh cloth of the flexible sheet material, and an interface protection layer is formed after curing. The mesh cloth plays a role of skeleton support during the construction of the interface protection layer and has good anti-cracking performance. The interface protection layer cured on the surface of the mesh cloth also increases the impact resistance. The mesh cloth and the sheet material are combined into an integrated structure. The laying of the mesh cloth is completed at the same time as the waterproof membrane is laid, eliminating the construction step of laying the mesh cloth separately.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for producing a flexible sheet, characterized in that: The following steps are included Step S1, processing the asphalt raw material in a reaction tank to obtain molten asphalt rubber, and transporting the asphalt rubber to a primary unloading point and a secondary unloading point through pipelines; Step S2, primary scraping: the isolation film is transferred to the first scraping module through the guide roller, and the first scraping module evenly scrapes the asphalt rubber material flowing out of the primary feeding point on one side of the isolation film to form a rubber material layer on one side; Step S3, pressing the side of the isolation film coated with the rubber layer together with the tire base material through a pressing roller, and transferring it to the second scraping module below the secondary unloading point; Step S4, secondary scraping: the second scraping module scrapes the asphalt rubber material flowing out of the secondary feeding point evenly on the other side of the tire base material to form a rubber layer on the other side; Step S5, lightly pressing the mesh cloth onto the rubber layer on the other side of the tire base through a pair of extrusion rollers, and finally forming a finished flexible sheet; Step S5, immersing the formed flexible sheet into a cooling water pool for cooling.

2. The method for producing a flexible sheet according to claim 1, characterized in that: The asphalt processing in step S1 is specifically to place the base asphalt in a reaction tank, control the temperature at 120°C to 160°C, add the modifier and softener and raise the temperature to 180°C to 210°C, add talcum powder and other fillers and functional additives after mixing and modifying for 1.0 to 5 hours, and mix evenly to obtain the modified asphalt rubber.

3. A production equipment for flexible sheets, characterized in that: It includes an isolation film traction system, a tire base traction system, a mesh cloth traction system, a first scraping mechanism for scraping modified asphalt rubber on the isolation film to form a lower rubber layer, a pressure roller for compounding the tire base material on the lower rubber layer, a second scraping mechanism for scraping modified asphalt rubber on the surface of the tire base material to form an upper rubber layer, and a shaping mechanism for compounding the mesh cloth on the surface of the upper rubber layer.

4. The production equipment of the flexible sheet material according to claim 3, characterized in that: The isolation film traction system, tire base traction system and mesh cloth traction system respectively include a discharge roller and a plurality of guide rollers for traction of the isolation film, tire base material or the mesh cloth to the downstream direction.

5. The production equipment of the flexible sheet material according to claim 4, characterized in that: The first scraping mechanism is arranged downstream of the conveying direction of the isolation film traction system, and includes a group of first heating oil-coating rollers and first cooling rollers that are arranged adjacent to each other and rotate in opposite directions; high-temperature heat-conducting oil is introduced into the interior of the first heating oil-coating roller, and cooling water is introduced into the interior of the first cooling roller. A first feed hopper is installed at the feed end and below the primary unloading point.

6. The production equipment of the flexible sheet material according to claim 5, characterized in that: The second scraping mechanism is arranged in the downstream direction of the tire base traction system and the first scraping mechanism, and includes a group of second heating oil-coating rollers and second cooling rollers that are adjacent to each other and rotate in opposite directions. High-temperature heat-conducting oil is introduced into the interior of the second heating oil-coating roller, and cooling water is introduced into the interior of the second cooling roller. A feed hopper is installed at the feed end and below the secondary unloading point.

7. The production equipment of the flexible sheet material according to claim 6, characterized in that: The shaping mechanism is arranged in the downstream direction of the mesh cloth traction system and the second scraping mechanism, and comprises a pair of upper shaping rollers and lower shaping rollers which are arranged adjacent to each other and rotate towards each other.

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