Durable cement blanket
By heating and melting the surface of the waterproof coating layer and immersing the lower braided layer into it, combined with the strengthening design of the convex ribs, physical connection is formed to solve the problem of poor connection between the cement blanket waterproof layer and the adhesive, achieving a stronger connection and better waterproof effect.
Patent Information
- Application Number
- CN202421671482.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The waterproof layer of the existing cement blanket is poorly connected to the adhesive, which causes the waterproof layer to fall off easily, and the aging of the adhesive leads to deterioration of the adhesive, affecting the waterproof effect.
By heating the surface of the waterproof coating layer to melt into a viscous gel, the lower braided layer is immersed in the waterproof coating layer, and the connection strength is enhanced by strengthening the convex edges to form a physical connection instead of the adhesive connection.
The firm connection between the waterproof cover layer and the three-dimensional filling layer is achieved, which avoids the problem of waterproof layer falling off and the aging of the adhesive, and improves the waterproof performance and durability of the cement blanket.
Smart Images
Figure CN222891768U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement blankets, in particular to a durable cement blanket. Background Art
[0002] Cement blankets are often used in civil engineering, industrial construction and other industries as waterproof materials. They usually include upper and lower woven layers, with cement mixtures filled in the middle. A waterproof layer is pasted under the lower woven layer. The waterproof layer can usually be made of a coil made of plastic, PVC and other materials. However, the inventors found in actual use that the adhesive for pasting the waterproof layer is not well bonded to the coil. After a period of use, the coil is easy to fall off, affecting the waterproof effect of the cement blanket. In addition, the adhesive has an aging problem, and its viscosity will gradually decline over time, making it difficult to adhere to the coil well. Utility Model Content
[0003] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a durable cement blanket.
[0004] The technical solution of this utility model is as follows:
[0005] A durable cement blanket, comprising:
[0006] The three-dimensional filling layer comprises an upper woven layer, a lower woven layer, and a connecting wire connected and supported between the upper woven layer and the lower woven layer, the space between the upper woven layer and the lower woven layer is filled with a cement mixture, and the lower woven layer is woven by warp and weft in a grid shape;
[0007] The waterproof covering layer is located at the lower side of the three-dimensional filling layer, and its upper part wraps the warp and weft of the lower woven layer. The wrapping relationship is formed by heating the upper part of the waterproof covering layer to melt into a viscous gel and then pressing it onto the lower woven layer.
[0008] The upper surface of the waterproof covering layer is provided with reinforcing ridges at positions corresponding to the warp and / or weft lines of the lower braided layer.
[0009] By melting the upper surface of the waterproof covering layer into a viscous gel, the lower woven layer is immersed in the waterproof covering layer. When the upper surface of the waterproof covering layer cools, the lower woven layer can be covered to form a connection. The present application uses this physical connection method to replace the adhesive connection, which not only avoids the problem that the waterproof layer and the adhesive cannot be well adhered, but also avoids the problem of adhesive aging, so that the waterproof covering layer can be firmly connected to the three-dimensional filling layer.
[0010] In addition, the waterproof covering layer is provided with reinforcing ridges corresponding to the warp and / or weft of the lower woven layer. When the upper surface of the waterproof covering layer melts, more melted colloid can be present at the reinforcing ridges to wrap the warp and / or weft, thereby strengthening the connection strength between the waterproof covering layer and the lower woven layer.
[0011] Specifically, the cross-section of the reinforcing ridge before melting is trapezoidal, so as to increase the overall melting speed of the reinforcing ridge and facilitate production.
[0012] Furthermore, a groove is provided on the top surface of the reinforcing ridge before it melts, and the groove extends along the direction of the reinforcing ridge, and the cross-sectional width is greater than the cross-sectional width of the warp or weft of the lower woven layer, which not only plays a role in positioning with the warp or weft, but also prevents the reinforcing rib from failing to sink into the reinforcing ridge due to slow melting of the center of the reinforcing ridge. At the same time, when the warp or weft sinks from the groove into the waterproof covering layer, the raised parts on both sides of the groove can more easily cover the warp or weft to wrap the warp or weft.
[0013] The height of the reinforcing ridge before melting is preferably 2-3 mm, so that the melting degree of the reinforcing ridge is almost the same as that of the upper surface of other parts of the waterproof covering layer.
[0014] Preferably, the waterproof covering layer is an integrally formed roll.
[0015] The waterproof covering layer is preferably made of PVC, PE, TPO or EPDM material.
[0016] In order to avoid melting through the waterproof covering layer due to accidental melting, a high temperature resistant coating is applied to the lower surface of the waterproof covering layer.
[0017] In the present application, the lower end of the connecting wire extends out of the lower braided layer and is connected to the adjacent connecting wire in a U-shape, which not only improves the connection strength between the upper and lower braided layers, but also can be immersed in the waterproof covering layer to form a connection with the waterproof covering layer, further improving the connection strength between the waterproof covering layer and the three-dimensional filling layer, making the waterproof covering layer less likely to fall off.
[0018] In the present application, the thickness of the heated and melted upper portion of the waterproof covering layer is 1.5-2 times the thickness of the lower woven layer, so that the lower woven layer is completely immersed in the upper portion of the waterproof covering layer and wrapped by it, providing a stable connection relationship and preventing the waterproof covering layer from falling off easily.
[0019] The thickness of the waterproof covering layer can be 3-4 times the thickness of the lower woven layer.
[0020] The utility model provides a durable cement blanket, which melts the upper surface of the waterproof covering layer into a viscous gel so that the lower woven layer is immersed in the waterproof covering layer. When the upper surface of the waterproof covering layer is cooled, the lower woven layer can be covered to form a physical connection. This physical connection replaces the adhesive connection, which avoids the problem that the waterproof layer and the adhesive cannot be well adhered, and also avoids the problem of aging of the adhesive, so that the waterproof covering layer can be firmly connected to the three-dimensional filling layer to avoid falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In the attached picture:
[0022] Figure 1 is a cross-sectional schematic diagram of a cement blanket;
[0023] Figure 2 To strengthen the cross-sectional view before the ridge is melted.
[0024] The components represented by the reference numerals in the figure are:
[0025] 1. Three-dimensional filling layer; 11. Upper braided layer; 12. Lower braided layer; 13. Connecting wire; 14. Cement mixture; 2. Waterproof covering layer; 21. Reinforced ridges; 3. High temperature resistant coating. DETAILED DESCRIPTION
[0026] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a durable cement blanket, comprising a three-dimensional filling layer 1 and a waterproof covering layer 2.
[0027] The three-dimensional filling layer 1 includes an upper braided layer 11, a lower braided layer 12, and a connecting wire 13 connected and supported between the upper braided layer 11 and the lower braided layer 12, and the three together form a 3D three-dimensional braided fabric. The connecting wire 13 can be made of tough fiber such as glass fiber, and the upper braided layer 11 and the lower braided layer 12 are connected by needle weaving to form a hollow accommodation space. The hollow accommodation space between the upper braided layer 11 and the lower braided layer 12 is filled with a cement mixture 14.
[0028] The upper woven layer 11 is finely woven to facilitate the leakage of the cement mixture 14 and to allow water to seep in. The lower woven layer 12 is woven from warp and weft in a grid shape and has holes for filling the cement mixture and for allowing the melted colloid of the waterproof covering layer 2 to pass through the holes and wrap the warp and weft of the lower woven layer 12.
[0029] The waterproof covering layer 2 is located under the three-dimensional filling layer 1, and its upper part wraps the warp and weft of the lower woven layer 12. The wrapping relationship is formed by heating and melting the upper part of the waterproof covering layer 2 into a viscous gel and then pressing it onto the lower woven layer 12.
[0030] The thickness of the heated and melted upper portion of the waterproof covering layer 2 is preferably 1.5-2 times the thickness of the lower woven layer 12, so that the lower woven layer 12 is completely immersed in the upper portion of the waterproof covering layer 2 and is wrapped therein, thereby providing a stable connection relationship and preventing the waterproof covering layer 2 from falling off easily.
[0031] The thickness of the waterproof covering layer 2 can be 3-4 times the thickness of the lower woven layer 12 .
[0032] The upper surface of the waterproof covering layer 2 is provided with reinforcing ridges 21 at positions corresponding to the warp and / or weft of the lower woven layer 12. When the waterproof covering layer 2 is pressed onto the lower woven layer 12, the reinforcing ridges 21 are located above the warp and / or weft, making the colloid above the warp and / or weft thicker, thereby improving the structural strength of the waterproof covering layer 2 at the warp and / or weft positions, and further enhancing the connection stability between the waterproof covering layer 2 and the lower woven layer 12.
[0033] The cross-section of the reinforcing ridge 21 before melting is preferably a trapezoid, so as to increase the overall melting speed of the reinforcing ridge 21 and facilitate production.
[0034] The height of the reinforcing ridge 21 before melting is preferably 2-3 mm, so that the melting degree thereof is almost the same as that of the upper surface of other parts of the waterproof covering layer 2 .
[0035] Furthermore, if Figure 2 As shown, the top surface of the reinforcing ridge 21 before melting may also be provided with a groove, which extends along the reinforcing ridge 21 and has a cross-sectional width greater than the cross-sectional width of the warp or weft of the lower woven layer 12, which not only plays a role in positioning with the warp or weft, but also can prevent the center of the reinforcing ridge 21 from melting slowly, resulting in the inability of the reinforcing rib 15 to sink into the reinforcing ridge 21. At the same time, when the warp or weft sinks from the groove into the waterproof covering layer 2, the raised parts on both sides of the groove can more easily cover the warp or weft to wrap the warp or weft.
[0036] The waterproof covering layer 2 is preferably an integrally formed coiled material, which can be made of PVC, PE, TPO or EPDM material.
[0037] Corresponding to different materials, the temperature at which the upper portion of the waterproof covering layer 2 melts into a viscous gel is also different, for example:
[0038] When PVC material is used, the heating temperature of the waterproof covering layer 2 is 170-190°C;
[0039] When PE material is used, the heating temperature of the waterproof covering layer 2 is 200-280°C;
[0040] When TPO material is used, the heating temperature of the waterproof coating layer 2 is 350-550°C;
[0041] When EPDM material is used, the heating temperature of the waterproof coating layer 2 is 400-500°C.
[0042] In addition, the lower surface of the waterproof coating layer 2 may be coated with a high temperature resistant coating 3 to prevent the waterproof coating layer 2 from being melted through by mistake and losing its waterproof capability. The high temperature resistant coating 3 may be made of a high temperature resistant polymer material, such as polytetrafluoroethylene.
[0043] In this embodiment, the lower end of the connecting wire 13 can also extend out of the lower woven layer 12 and be connected to the adjacent connecting wire 13 in a U-shape, which not only improves the connection strength between the upper and lower woven layers 12, but also can be immersed in the waterproof covering layer 2 to form a connection with the waterproof covering layer 2, further improving the connection strength between the waterproof covering layer 2 and the three-dimensional filling layer 1, making the waterproof covering layer 2 less likely to fall off.
[0044] During manufacturing, the three-dimensional filling layer 1 is turned over to prevent the lower woven layer 12 from being located on top, and the cement mixture 14 is filled into the three-dimensional filling layer 1 through the holes of the lower woven layer 12, and is vibrated and spread evenly by a vibrator; the waterproof covering layer 2 is also turned over, and from one side of the three-dimensional filling layer 1, the surface provided with the reinforcing ridges 21 is heated and melted, and the waterproof covering layer 2 is pressed onto the lower woven layer 12 by a pressing roller, so that the lower woven layer 12 is immersed in the waterproof covering layer 2 through the melted colloid and is wrapped, and after the melted surface of the waterproof covering layer 2 is cooled, it forms a physical connection with the lower woven layer 12.
[0045] The durable cement blanket of the present application uses this physical connection method instead of adhesive connection, which not only avoids the problem that the waterproof layer and the adhesive cannot adhere well, but also avoids the problem of adhesive aging, so that the waterproof covering layer 2 can be firmly connected to the three-dimensional filling layer 1 to avoid falling off.
Claims
1. A durable cement blanket, characterized in that: include: A three-dimensional filling layer (1), comprising an upper woven layer (11), a lower woven layer (12), and a connecting wire (13) connecting and supporting the upper woven layer (11) and the lower woven layer (12), wherein a cement mixture (14) is filled between the upper woven layer (11) and the lower woven layer (12), and the lower woven layer (12) is woven from warp threads and weft threads in a grid shape; A waterproof covering layer (2) is located on the lower side of the three-dimensional filling layer (1), and its upper part wraps the warp and weft of the lower woven layer (12), and the wrapping relationship is formed by heating the upper part of the waterproof covering layer (2) to melt into a viscous gel state and then pressing it onto the lower woven layer (12); The upper surface of the waterproof covering layer (2) is provided with reinforcing ridges (21) at positions corresponding to the warp and / or weft of the lower woven layer (12).
2. A durable cement blanket as claimed in claim 1, characterized in that: The cross section of the reinforcing ridge (21) before melting is trapezoidal.
3. A durable cement blanket as claimed in claim 2, characterized in that: The top surface of the reinforcing ridge (21) is provided with a groove before melting, the groove extends along the reinforcing ridge (21), and the cross-sectional width is greater than the cross-sectional width of the warp or weft of the lower braided layer (12).
4. A durable cement blanket as claimed in claim 3, characterized in that: The height of the reinforcing ridge (21) before melting is 2-3 mm.
5. A durable cement blanket as claimed in claim 4, characterized in that: The waterproof coating layer (2) is an integrally formed coiled material.
6. A durable cement blanket as claimed in claim 5, characterized in that: The waterproof covering layer (2) is made of PVC, PE, TPO or EPDM material.
7. A durable cement blanket as claimed in claim 1, characterized in that: The lower surface of the waterproof coating layer (2) is coated with a high temperature resistant coating (3).
8. A durable cement blanket as claimed in claim 1, characterized in that: The lower end of the connecting wire (13) extends out of the lower braided layer (12) and is connected to the adjacent connecting wire (13) in a U-shape.
9. A durable cement blanket as claimed in claim 1, characterized in that: The thickness of the upper portion of the waterproof covering layer (2) that is heated and melted is 1.5-2 times the thickness of the lower woven layer (12).
10. A durable cement blanket as claimed in claim 9, characterized in that: The thickness of the waterproof covering layer (2) is 3-4 times the thickness of the lower woven layer (12).