Fiber reinforced polymer membrane-based wet-laid waterproofing membrane
Patent Information
- Application Number
- CN202522486518.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-24
AI Technical Summary
这些细微的裂缝便会成为潜在的渗漏通道，一旦外部水分侵入，极易在防水层与基层之间发生“窜水”现象，导致局部漏水演变为大面积的防水失效，严重威胁防水系统的整体可靠性和建筑结构的安全耐久性
[0029]本实用新型中，可通过沥青自粘层完成与建筑所需铺设面的粘接操作，实现卷材结构与建筑所需铺设面的满粘结，有效避免因搭接边薄弱导致的窜水问题。沥青自粘层可以自动完成粘接，其可在潮湿基面下仍保持稳定粘接效果，PE防水膜为隔离层，隔绝外界雨水，丙纶布层则为主体，保证卷材结构的强度。防粘隔离层作为临时覆盖层，在铺贴过程中逐步剥离，防止沥青自粘层过早暴露污染或失效。各层协同作用，提升防水层的整体性、耐久性与抗渗能力，尤其适用于长期浸水或变形较大的隐蔽工程部位。
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Figure CN224881501U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof membrane technology, specifically to a fiber-reinforced polymer membrane-based wet-laid waterproof membrane. Background Technology
[0002] Wet-laid waterproof membranes are a key material in the field of building waterproofing. Their applications are primarily concentrated in non-exposed areas that need to withstand damp environments or are chronically concealed, such as basement floors, side walls, ceilings, and bathrooms. The core technology of this type of material lies in its unique construction method—it uses wet slurries such as cement mortar or polymer cement slurry to achieve full adhesion to the building substrate, forming a continuous and dense waterproof barrier that effectively prevents moisture penetration. Because its application is relatively lenient in terms of substrate moisture content and it has good adaptability to complex substrates, it plays an indispensable role in modern construction projects.
[0003] In the development of wet-lay roofing membranes, traditional polyethylene-polypropylene roofing membranes were widely used due to their low cost and ease of large-area installation. However, this material faces a fundamental technical bottleneck:
[0004] The bonding between the waterproofing membrane and the substrate, as well as the overlap between the membrane rolls, relies entirely on on-site mixed cement grout. This bonding method results in the weakest point being at the overlap edge, where only a thin layer of cement mortar physically separates the upper and lower plastic films. In actual use, the building substrate inevitably undergoes slight deformation or shrinkage, and the cement mortar itself also has the characteristic of drying shrinkage. These factors easily lead to micro-cracks in the mortar layer at the overlap edge. These tiny cracks become potential leakage channels. Once external moisture intrudes, it is very easy for water to seep between the waterproofing layer and the substrate, causing localized leaks to evolve into large-area waterproofing failures, seriously threatening the overall reliability of the waterproofing system and the safety and durability of the building structure.
[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content
[0006] The purpose of this invention is to provide a fiber-reinforced polymer membrane-based wet-laid waterproof membrane.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A fiber-reinforced polymer membrane-based wet-lay waterproof membrane includes a release liner, an asphalt self-adhesive layer, a PE waterproof membrane, and a polypropylene fabric layer arranged sequentially. The release liner and the asphalt self-adhesive layer are detachably connected. The asphalt self-adhesive layer is bonded to the PE waterproof membrane, and the PE waterproof membrane is bonded to the polypropylene fabric layer. The release liner, the asphalt self-adhesive layer, the PE waterproof membrane, and the polypropylene fabric layer combine to form a membrane structure for laying on the required surface of a building. The release liner is configured to detach from the asphalt self-adhesive layer only during the laying of the membrane structure. The membrane structure is bonded to the required surface of the building through the asphalt self-adhesive layer.
[0009] In the above technical solution, the asphalt self-adhesive layer can be used to bond the membrane to the surface to be laid, achieving full adhesion between the membrane structure and the surface, effectively avoiding water seepage problems caused by weak overlaps. The asphalt self-adhesive layer can automatically complete the bonding process and maintain a stable adhesion even on damp substrates. The PE waterproof membrane acts as an isolation layer, isolating external rainwater, while the polypropylene fabric layer forms the main body, ensuring the strength of the membrane structure. The anti-adhesive isolation layer serves as a temporary covering layer, gradually peeling off during the laying process to prevent the asphalt self-adhesive layer from prematurely exposing itself to contamination or failure. The synergistic effect of each layer enhances the overall integrity, durability, and impermeability of the waterproof layer, making it particularly suitable for concealed engineering areas that are subject to long-term immersion or significant deformation.
[0010] Unlike existing technologies that rely on cement mortar for overlapping and bonding, this invention achieves full bonding between the roll material structure and the required building surface, as well as sealing of the overlaps between the roll materials, through an asphalt self-adhesive layer, fundamentally eliminating weak points at the overlap edges. During wet-laying, the asphalt self-adhesive layer actively forms a continuous and dense bonding interface with the substrate. Even if the substrate undergoes minor deformation or shrinkage, the bonding integrity remains intact, effectively blocking the path of moisture seepage under the waterproof layer.
[0011] The base layer is the surface that needs to be laid in the building.
[0012] In a further technical solution, the anti-adhesive isolation layer has a protective surface and a composite surface, wherein the size of the composite surface is greater than or equal to the size of the bonding surface between the asphalt self-adhesive layer and the surface to be laid in the building.
[0013] The dimensions include length and width.
[0014] The above design allows the composite surface to completely cover the bonding area of the asphalt self-adhesive layer, effectively preventing contamination, oxidation, or premature failure of the asphalt self-adhesive layer due to external force contact or environmental influences during transportation, storage, and pre-laying construction. This protective surface can be easily peeled off during construction, exposing a clean bonding surface and ensuring that the adhesion between the roll structure and the required building surface remains optimal.
[0015] In a further technical solution, the length and width of the PE waterproof membrane and the polypropylene fabric layer are equal.
[0016] The above design ensures complete adhesion between the PE waterproof membrane and the polypropylene fabric layer within the roll structure, preventing interlayer misalignment or edge curling caused by dimensional deviations, thus guaranteeing the flatness and continuity of the overall structure. Simultaneously, the uniform-size design facilitates industrialized mass production, improving material utilization and manufacturing efficiency while reducing cutting waste.
[0017] In a further technical solution, the edge of the roll structure is provided with an overlap area.
[0018] With the above design, when adjacent roll structures are laid, the overlapping area of one roll structure is pressed against the overlapping area of another roll structure to form a continuous and seamless overlapping structure, thus achieving complete closure of the waterproof layer.
[0019] In a further technical solution, the overlap area is located at the edge of the roll structure in the length direction and / or width direction.
[0020] The above design ensures reliable overlap in both horizontal and vertical laying.
[0021] In a further technical solution, the overlap area is formed by the edge of the roll structure protruding 80-100mm.
[0022] The above design effectively prevents leakage at joints due to insufficient overlap. This protruding dimension is easy to manipulate during construction, facilitating alignment and compaction, and improving the sealing quality of the joints.
[0023] The terms “first” and “second” used in this document do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.
[0024] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.
[0025] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.
[0026] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.
[0027] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.
[0028] The working principle and advantages of this utility model are as follows:
[0029] In this invention, the asphalt self-adhesive layer completes the bonding process with the building surface, achieving full adhesion between the roll material structure and the surface, effectively preventing water seepage due to weak overlaps. The asphalt self-adhesive layer automatically bonds, maintaining stable adhesion even on damp surfaces. The PE waterproof membrane acts as an isolation layer, isolating external rainwater, while the polypropylene fabric layer forms the main body, ensuring the strength of the roll material structure. The anti-adhesive isolation layer serves as a temporary covering, gradually peeling off during installation to prevent premature exposure, contamination, or failure of the asphalt self-adhesive layer. The synergistic effect of each layer enhances the overall integrity, durability, and impermeability of the waterproof layer, making it particularly suitable for concealed engineering areas subject to prolonged immersion or significant deformation.
[0030] Unlike existing technologies that rely on cement mortar for overlapping and bonding, this invention achieves full bonding between the roll material structure and the required building surface, as well as sealing of the overlaps between the roll materials, through an asphalt self-adhesive layer, fundamentally eliminating weak points at the overlap edges. During wet-laying, the asphalt self-adhesive layer actively forms a continuous and dense bonding interface with the substrate. Even if the substrate undergoes minor deformation or shrinkage, the bonding integrity remains intact, effectively blocking the path of moisture seepage under the waterproof layer. Attached Figure Description
[0031] Appendix Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;
[0032] Appendix Figure 2 This is a schematic diagram of the overlapping area structure in an embodiment of this utility model.
[0033] In the attached diagrams above: 1. Anti-stick release layer; 11. Composite surface;
[0034] 2. Asphalt self-adhesive layer;
[0035] 3. PE waterproof membrane;
[0036] 4. Polypropylene fabric layer;
[0037] 5. Overlap area; 51. Exposed self-adhesive overlap edge; 52. Receiving edge. Detailed Implementation
[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0039] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.
[0040] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.
[0041] See appendix Figure 1 - Figure 2 As shown, a fiber-reinforced polymer membrane-based wet-laid waterproof membrane includes an anti-sticking isolation layer 1, an asphalt self-adhesive layer 2, a PE waterproof membrane 3, and a polypropylene fabric layer 4 arranged sequentially.
[0042] The anti-sticking isolation layer 1 and the asphalt self-adhesive layer 2 are detachably connected. The asphalt self-adhesive layer 2 is bonded to the PE waterproof membrane 3, and the PE waterproof membrane 3 is bonded to the polypropylene cloth layer 4.
[0043] The anti-sticking isolation layer 1, the asphalt self-adhesive layer 2, the PE waterproof membrane 3, and the polypropylene fabric layer 4 are combined to form a roll structure for laying on the required surface of the building. The anti-sticking isolation layer 1 is configured to detach from the asphalt self-adhesive layer 2 only when the roll structure is laid.
[0044] The roll structure is bonded to the building surface to be laid through the asphalt self-adhesive layer 2.
[0045] In the above technical solution, the asphalt self-adhesive layer 2 can complete the bonding operation with the surface to be laid on the building, achieving full bonding between the roll structure and the surface, effectively avoiding water seepage problems caused by weak overlap edges. The asphalt self-adhesive layer 2 can automatically complete the bonding, maintaining a stable bonding effect even on damp substrates. The PE waterproof membrane 3 serves as an isolation layer, isolating external rainwater, while the polypropylene fabric layer 4 forms the main body, ensuring the strength of the roll structure. The anti-adhesive isolation layer 1 acts as a temporary covering layer, gradually peeling off during the laying process to prevent the asphalt self-adhesive layer 2 from prematurely exposing to contamination or failure. The synergistic effect of each layer enhances the integrity, durability, and impermeability of the waterproof layer, making it particularly suitable for concealed engineering areas that are subject to long-term immersion in water or significant deformation.
[0046] Unlike existing technologies that rely on cement mortar for overlapping and bonding, this invention achieves full bonding between the roll material structure and the required building surface, as well as sealing of the overlaps between the roll materials, through an asphalt self-adhesive layer, fundamentally eliminating weak points at the overlap edges. During wet-laying, the asphalt self-adhesive layer actively forms a continuous and dense bonding interface with the substrate. Even if the substrate undergoes minor deformation or shrinkage, the bonding integrity remains intact, effectively blocking the path of moisture seepage under the waterproof layer.
[0047] The base layer is the surface that needs to be laid in the building.
[0048] Preferably, the anti-sticking isolation layer 1 has a protective surface and a composite surface 11, the size of which is greater than or equal to the size of the bonding surface between the asphalt self-adhesive layer 2 and the surface to be laid in the building.
[0049] The dimensions include length and width.
[0050] With the above design, the composite surface 11 can completely cover the bonding area of the asphalt self-adhesive layer 2, effectively preventing the asphalt self-adhesive layer from becoming contaminated, oxidized, or prematurely failing due to external force contact or environmental influences during transportation, storage, and pre-laying construction. This protective surface can be easily peeled off during construction to expose a clean bonding surface, ensuring that the adhesion between the roll structure and the required building surface is always at its optimal state.
[0051] Preferably, the length and width of the PE waterproof membrane 3 and the polypropylene fabric layer 4 are equal.
[0052] The above design ensures that the PE waterproof membrane 3 and the polypropylene fabric layer 4 are completely bonded within the roll structure, avoiding interlayer misalignment or edge curling caused by dimensional deviations, thus guaranteeing the flatness and continuity of the overall structure. Simultaneously, the uniform-size design facilitates industrialized mass production, improving material utilization and manufacturing efficiency, and reducing cutting waste.
[0053] Preferably, the edge of the roll structure is provided with an overlap area 5.
[0054] With the above design, when adjacent roll structures are laid, the overlapping area 5 of one roll structure is pressed against the overlapping area 5 of another roll structure to form a continuous and seamless overlapping structure, thereby achieving complete closure of the waterproof layer.
[0055] The following embodiments are provided for the overlapping area 5, such as Figure 2 As shown, the overlap area 5 can be designed with an asymmetrical structure. One side consists of an exposed self-adhesive overlap 51 with only the asphalt self-adhesive layer 2 (both sides of which have anti-adhesive isolation layers 1), while the other side is a receiving edge 52 covered with the anti-adhesive isolation layer 1 (the receiving edge 52 is composed of the anti-adhesive isolation layer 1, the asphalt self-adhesive layer 2, the PE waterproof membrane 3, and the polypropylene fabric layer 4). This ensures both self-adhesive sealing and physical compression during the overlap. During installation, once the anti-adhesive isolation layers 1 on both sides are peeled off, the exposed self-adhesive overlap 51 can be directly adhered to the surface of the receiving edge 52 of the adjacent roll material (the exposed self-adhesive overlap 51 is located below the receiving edge 52), forming a firm and tight connection interface, effectively avoiding the risk of leakage caused by misalignment or gaps. This design also facilitates the identification of the overlap direction by construction personnel, improving laying efficiency and accuracy.
[0056] Preferably, the overlap area 5 is located at the edge of the roll structure in the length direction and / or width direction.
[0057] The above design ensures reliable overlap during both horizontal and vertical laying. The overlap area 5 along the length facilitates long-side splicing and improves the efficiency of large-area laying; the overlap area 5 along the width effectively solves the problem of short-side joints and enhances the sealing of nodes.
[0058] Preferably, the overlap area 5 is formed by the edge of the roll structure protruding 80-100mm.
[0059] The above design effectively prevents leakage at joints due to insufficient overlap. This protruding dimension is easy to manipulate during construction, facilitating alignment and compaction, and improving the sealing quality of the joints.
[0060] Working principle:
[0061] When using this waterproofing membrane, clean the surface to be covered, ensuring it is free of standing water, oil, and sharp protrusions. Then, directly peel off the release liner 1 and apply the asphalt self-adhesive layer 2 to the surface. Slowly unfold and compact the membrane structure to ensure full contact and adhesion between the asphalt self-adhesive layer 2 and the surface. When overlapping adjacent membrane structures, use rollers to fuse the adhesive layers, forming a continuous seal. In critical waterproofing applications such as basement floors, side walls, and roofs, especially on damp surfaces, the asphalt self-adhesive layer 2 maintains effective adhesion, avoiding the risk of delamination caused by unclean interfaces common with traditional waterproofing materials. The polypropylene fabric layer 4 and the PE waterproof membrane 3 work synergistically to not only enhance overall puncture resistance but also improve the membrane's deformation response under complex stress.
[0062] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A fiber-reinforced polymer membrane-based wet-laid waterproof membrane, characterized in that: It includes an anti-sticking isolation layer (1), an asphalt self-adhesive layer (2), a PE waterproof membrane (3), and a polypropylene cloth layer (4) arranged in sequence. The anti-sticking isolation layer (1) and the asphalt self-adhesive layer (2) are detachably connected. The asphalt self-adhesive layer (2) is bonded to the PE waterproof membrane (3). The PE waterproof membrane (3) is bonded to the polypropylene cloth layer (4). The anti-sticking isolation layer (1), the asphalt self-adhesive layer (2), the PE waterproof membrane (3) and the polypropylene fabric layer (4) are combined to form a roll structure for laying on the required surface of the building, wherein the anti-sticking isolation layer (1) is configured to detach from the asphalt self-adhesive layer (2) only when the roll structure is laid. The roll structure is bonded to the surface to be laid in the building through the asphalt self-adhesive layer (2).
2. The fiber-reinforced polymer membrane-based wet-laid waterproof membrane according to claim 1, characterized in that: The anti-adhesive isolation layer (1) has a protective surface and a composite surface (11), the size of which is greater than or equal to the size of the bonding surface between the asphalt self-adhesive layer (2) and the surface to be laid in the building.
3. The fiber-reinforced polymer membrane-based wet-laid waterproof membrane according to claim 1, characterized in that: The length and width of the PE waterproof membrane (3) and the polypropylene cloth layer (4) are equal.
4. The fiber-reinforced polymer membrane-based wet-laid waterproof membrane according to claim 1, characterized in that: The edge of the roll structure is provided with an overlap area (5).
5. The fiber-reinforced polymer membrane-based wet-laid waterproof membrane according to claim 4, characterized in that: The overlap area (5) is located at the edge of the roll structure in the length direction and / or width direction.
6. The fiber-reinforced polymer membrane-based wet-laid waterproof membrane according to claim 4, characterized in that: The overlap area (5) is formed by protruding 80-100mm from the edge of the roll structure.