Tyre-free wet-paving waterproof coiled material
By setting a fiber nonwoven fabric middle layer with diamond-shaped holes at the overlap edge of the non-woven waterproof membrane, the problem of easy wrinkling at the overlap edge is solved, achieving high wrinkle resistance and full adhesion, thus improving the construction quality of the membrane.
Patent Information
- Application Number
- CN202423126009.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing non-woven wet-laid waterproof membranes are prone to wrinkles at the overlapping edges, which can lead to water seepage channels and leakage during construction, making it difficult to meet the mechanical performance requirements of national standards.
A non-woven fiber fabric with a diamond-shaped perforation structure is set as an intermediate layer at the overlapping edges of the roll material. This allows the asphalt base material to penetrate through the perforations, forming a discontinuous physical separation structure, which enhances the support and flexibility of the overlapping edges and balances the traction force of the production line.
It effectively reduces wrinkles at the overlap edges of the roll material, improves the tensile strength and flatness of the overlap edges, ensures full adhesion during construction, and meets the mechanical performance requirements of national standards.
Smart Images
Figure CN223791147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof engineering technology materials, and in particular to a non-woven, wet-laid waterproof membrane. Background Technology
[0002] Non-woven wet-applied waterproof membrane is the most widely used waterproof membrane in the field of waterproof membranes. Because it does not require hot-melt heating during construction, does not produce asphalt fumes during construction, and is relatively friendly to damp substrate environments, non-woven wet-applied waterproof membranes are widely used in building roofs, underground side walls, and foundation slabs.
[0003] To facilitate storage and transportation, rolled materials are generally stored vertically, making the overlapping edges susceptible to compression deformation and wrinkling. During the manufacturing process, the polymer film base and modified bitumen base are stretched under traction at high temperatures and then cooled to form the final product. Differences in material properties such as elongation and elastic modulus between the polymer film base and modified bitumen base can easily cause wrinkles at the overlapping edges. These wrinkles cannot be restored to a smooth state quickly after unwinding, making it highly susceptible to incomplete adhesion at the overlapping edges during construction, creating water seepage channels and leading to engineering quality problems such as leakage.
[0004] Under existing production processes, simply adjusting process parameters such as production temperature and production line tension, or switching polymer film bases, cannot effectively improve the wrinkles at the overlap edges of non-woven waterproof membranes while meeting the tensile strength and elongation mechanical performance indicators of Class H and Class E products in the national standard GB / T 35467-2017. For example, patent CN 113752658 A discloses a fiber-reinforced non-woven bitumen waterproof membrane, which mainly reduces large-area wrinkles by directly spraying molten fiber material into the bitumen layer through an added spinneret device to form a grid-like fiber filament reinforcement layer. However, the production line equipment needs to be significantly modified when preparing this waterproof membrane, and the grid-like fiber filament layer cannot effectively reinforce and support the edges such as the overlap edges of the membrane.
[0005] Therefore, the waterproofing construction market urgently needs to develop a non-woven, wet-laid waterproof membrane with high wrinkle resistance and overlapping edges. Summary of the Invention
[0006] In view of this, the present invention provides a non-woven wet-laid waterproof membrane with high wrinkle resistance, which solves the problems of engineering quality such as easy wrinkling of the overlapping edges of existing waterproof membranes and lack of effective support, which leads to the inability to fully adhere the overlapping edges, forming water channels and causing leakage.
[0007] The non-woven waterproof membrane provided by this utility model uses a non-woven fiber fabric with a diamond-shaped perforated structure distributed in the asphalt base material on both sides of the overlap edge of the membrane as an intermediate layer. This allows the asphalt base material to intermittently penetrate the intermediate layer of the non-woven fiber fabric with a diamond-shaped perforated structure, thus forming a discontinuous physical separation structure. This reduces the continuous wrinkles caused by external force curling and compression at the overlap edge of the membrane, as well as by the difference in elongation between the polymer film base and the modified asphalt base material during the production line forming process. It also reduces the traction force on both sides of the membrane during production. At the same time, the non-woven fiber fabric as an intermediate layer increases the support of the overlap edge of the membrane.
[0008] To achieve the above objectives, the present invention adopts the following technical solution.
[0009] A non-woven wet-laid waterproof membrane, the waterproof membrane comprising an upper surface membrane layer, a lower surface membrane layer, an asphalt layer, an overlap edge intermediate layer, and an upper surface overlap edge layer; wherein, the asphalt layer is located between the upper surface membrane layer and the lower surface membrane layer, and the overlap edge intermediate layer is embedded inside the asphalt layer and is respectively disposed at the overlap edges on both sides of the waterproof membrane;
[0010] The overlapping edge middle layer includes a non-woven fiber fabric with multiple holes.
[0011] As an alternative implementation, the plurality of holes are provided in at least three rows along the length of the waterproof membrane, and the center points of the three adjacent rows of holes are arranged in a diamond shape.
[0012] As an optional implementation, the waterproof membrane further includes a polymer film base layer, which is embedded in the asphalt layer, and the projection of the polymer film base layer and the middle layer of the overlapping edges on both sides along the thickness direction of the waterproof membrane overlaps.
[0013] As an optional implementation, the width of the polymer film base layer is 920~930 mm and the thickness is 0.08~0.11 mm.
[0014] In this invention, the polymer membrane base layer is embedded in the asphalt layer to enhance the physical tensile and elongation properties of the asphalt layer within the waterproof membrane, thereby improving the tensile and elongation properties of the waterproof membrane.
[0015] As an optional embodiment, the upper surface film layer includes a polymer film layer, and the lower surface film layer includes a silicon-coated isolation film layer.
[0016] In this invention, when the upper surface film layer includes a polymer film layer and the lower surface film layer includes a silicone-coated release film layer, the silicone-coated release film layer acts as an anti-adhesion material to prevent the asphalt materials from sticking together. During use of the waterproof membrane, it can be peeled off to bond multiple waterproof membranes together or to bond the waterproof membrane to the object to be protected. The polymer film layer adheres to the surface of the asphalt layer, further enhancing the physical tensile strength and elongation properties of the upper surface of the asphalt layer within the waterproof membrane. Unlike the release film, it cannot easily separate from the asphalt layer within the waterproof membrane. Therefore, the non-woven wet-lay waterproof membrane only contains a single-sided adhesive layer and is classified as a single-sided waterproof membrane.
[0017] As an optional embodiment, the upper surface film layer includes a silicon-coated isolation film layer, the lower surface film layer includes a silicon-coated isolation film layer, and the polymer film base layer is adjacent to the middle layer of the overlapping edges on both sides.
[0018] In this invention, the upper surface membrane is a silicone-coated release membrane. When the lower surface membrane includes a silicone-coated release membrane, the silicone-coated release membrane acts as an anti-sticking material, thus the non-woven wet-laid waterproof membrane has a double-sided adhesive layer and is a double-sided waterproof membrane. The polymer membrane base layer is adjacent to the middle layer of the overlapping edges on both sides, and is used to enhance the physical tensile strength and elongation properties of the asphalt layer and the portion connected to the overlapping edges.
[0019] As an optional embodiment, the lower surface membrane layer includes a silicone-coated isolation membrane layer, the asphalt layer includes wet-laid modified asphalt base material, and the upper surface overlapping edge layer includes a silicone-coated isolation edge membrane layer.
[0020] In this invention, an overlapping intermediate layer is provided inside the asphalt layer, and it is respectively located at the overlapping edges of the waterproof membrane on both sides. Then, a non-woven fiber fabric with multiple holes is formed in the overlapping intermediate layer. The wet-laid modified asphalt base material adjacent to the overlapping intermediate layer, under high-temperature flowing conditions, permeates the non-woven fiber fabric through the holes, forming a physical separation structure between the discontinuous asphalt layer and the overlapping intermediate layer. This physical separation structure, similar to rivets, tightly bonds the asphalt layer and the intermediate layer, breaking up continuous wrinkles caused by external force curling at the membrane overlapping edges and the difference in elongation between the polymer film base and the modified asphalt base material during production line forming. Simultaneously, the good flexibility of the anti-wrinkle non-woven fiber fabric ensures a smooth construction of the overlapping asphalt base material, achieving a full adhesion effect.
[0021] Furthermore, this invention uses a non-woven fiber fabric with a diamond-shaped perforated structure as the middle layer of the overlapping edge. In the middle part of the asphalt layer, the upper and lower asphalt layers are in direct contact, which can make it easier to bond. This avoids problems such as the asphalt layer and the non-woven fiber fabric layer not being tightly impregnated and bonded, which would lead to a decrease in the bonding strength between the layers of the waterproof membrane and cause delamination.
[0022] As an optional implementation, the width of the nonwoven fabric is 110~115 mm and the thickness is 0.2~0.25 mm.
[0023] As an optional implementation, the holes in the nonwoven fabric are round.
[0024] As an alternative implementation, the diameter of the hole is 9.9~10.1 mm.
[0025] In this invention, the circular hole structure of the nonwoven fiber fabric, compared to square, rhomboid, or irregular pores, results in more uniform stress and less wrinkling when subjected to external force.
[0026] As an alternative implementation, the fiber nonwoven fabric is prepared by blending.
[0027] As an optional implementation, the holes in the nonwoven fabric are formed by infrared thermal perforation.
[0028] As an alternative implementation, the holes have the following diamond-shaped arrangement:
[0029] In the width direction of the fiber nonwoven fabric, the first and last round holes in the odd-numbered rows are respectively 4-6 mm away from the edge of the fiber nonwoven fabric, and the distance between the round holes is 18-22 mm.
[0030] In the width direction of the nonwoven fabric, the first and last round holes in even-numbered rows are 18-22 mm away from the edge of the nonwoven fabric, and the distance between the round holes is 18-22 mm; the vertical distance between the round holes between rows is 18-22 mm.
[0031] As an alternative implementation, the left (or one) edge of the upper surface film layer is recessed toward the center of the asphalt layer relative to the left edge of the asphalt layer (i.e., the left edge of the upper surface film layer is shorter than the left edge of the asphalt layer), the upper surface overlapping edge layer is located at the edge of the upper surface film layer, and the edge of the upper surface overlapping edge layer protrudes relative to the edge of the asphalt layer.
[0032] As an alternative implementation, the right (or the other) edge of the upper surface film protrudes relative to the asphalt layer, the asphalt layer is located between the upper and lower surface films, and the width of the asphalt layer is shorter than the width of the lower surface.
[0033] In this invention, the descriptions of "left side" and "right side" are only relative directional descriptions. When the placement direction of the waterproof membrane changes, the directional descriptions can be changed accordingly.
[0034] In this invention, the overall thickness of the non-woven wet-laid waterproof membrane varies with the thickness of the asphalt layer.
[0035] As an optional implementation, when the overall thickness of the non-woven wet-laid waterproof membrane is 1.5 mm, the thickness of the asphalt layer below the middle layer of the overlap edge is 0.6~0.8 mm.
[0036] As an optional implementation, when the overall thickness of the non-woven wet-laid waterproof membrane is 2.0 mm, the thickness of the asphalt layer below the middle layer of the overlap edge is 0.8~1.0 mm.
[0037] As an optional implementation, when the overall thickness of the non-woven wet-laid waterproof membrane is 1.5 mm, the thickness of the asphalt layer above and below the middle layer of the overlap edge is 0.6~0.8 mm, preferably 0.7~0.75 mm.
[0038] As an optional implementation, when the overall thickness of the non-woven wet-laid waterproof membrane is 2.0 mm, the thickness of the asphalt layer above and below the middle layer of the overlap edge is 0.8~1.0 mm.
[0039] As an optional implementation, the width of the upper surface film layer is 930~940 mm and the thickness is 0.035~0.04 mm.
[0040] As an optional implementation, the width of the lower surface film layer is 1040~1050 mm and the thickness is 0.035~0.04 mm.
[0041] As an optional implementation, the width of the overlapping edge layer on the upper surface is 120~130 mm and the thickness is 0.025~0.03 mm.
[0042] As an alternative embodiment, the nonwoven fabric comprises one or more composite fibers selected from PP, PA, and PVA fibers.
[0043] In this invention, the nonwoven fabric has anti-wrinkle properties.
[0044] As an optional implementation, the polymer membrane base layer includes one of a high-strength composite membrane, a polyester-reinforced membrane, and a cross-laminated membrane.
[0045] Optionally, the high-strength composite membrane includes HDPE.
[0046] Optionally, the polyester-reinforced film includes a PET film.
[0047] Optionally, the cross-laminated film comprises a polyethylene cross-laminated film.
[0048] As an optional implementation, the wet-laid modified asphalt base material includes heavy-grade petroleum 70# / 90# asphalt, softener, and modifier.
[0049] Optionally, the modifier includes at least one of styrene-butadiene rubber (SBR), styrene-butadiene front copolymer (SBS), hydrogenated resin, and terpene resin.
[0050] As an optional implementation, the silicone-coated release film layer includes a silicone-coated polyester (PET) release film or a silicone-modified polyethylene (PE) release film.
[0051] As an alternative implementation, the silicone-coated isolation edge film layer comprises a silicone-coated polyester (PET) release film.
[0052] As an optional implementation, the basis weight of the nonwoven fabric is 25~35 g / m².
[0053] As an optional implementation, the width of the nonwoven fabric is 110~115 mm and the thickness is 0.2~0.25 mm.
[0054] In this invention, during the production of the non-woven asphalt roll, the wet-laid modified asphalt base material is coated onto the silicone-coated isolation layer of the lower surface film layer using a primary oiling equipment on the production line. Then, anti-wrinkle fiber nonwoven fabric is applied to both sides of the wet-laid modified asphalt base material by a side film roller. The wet-laid modified asphalt base material is then coated again by a secondary oiling thickness-fixing equipment, so that the anti-wrinkle fiber nonwoven fabric layer is located between the upper and lower asphalt layers. The modified asphalt base material can penetrate the fiber nonwoven fabric layer and bond tightly under high temperature and flow conditions. At the same time, the fiber nonwoven fabric layer penetrates the upper and lower asphalt base materials at the pore positions to form a discontinuous physical separation structure. Finally, the polymer film base layer and the upper surface overlapping edge layer (e.g., silicone-coated isolation edge film layer) are simultaneously applied to the uppermost wet-laid modified asphalt base material and formed into a whole sheet by a pressure roller, thus producing a high-wrinkle-resistant overlapping edge non-woven wet-laid waterproof roll.
[0055] In this utility model, the above-mentioned technical features can be freely combined to form new technical solutions, provided that they do not conflict with each other.
[0056] Compared with the prior art, the technical solution of this utility model has the following beneficial technical effects:
[0057] (1) The non-woven waterproof membrane provided by this utility model has a non-woven waterproof membrane with a modified bitumen base material that can be oiled on the production line and intermittently penetrate the middle layer of the anti-wrinkle fiber non-woven fabric with a diamond-shaped hole structure to form a discontinuous physical separation structure. This breaks the continuous wrinkles caused by the curling of the membrane overlap due to external force and the difference in elongation between the polymer film base and the modified bitumen base material during the forming process on the production line. At the same time, the good flexibility of the anti-wrinkle fiber non-woven fabric can ensure that the asphalt base material at the overlap is flat and the construction can achieve full adhesion effect.
[0058] (2) The non-woven waterproof membrane provided by this utility model uses anti-wrinkle fiber non-woven fabric as the middle layer of the overlapping edge asphalt base material, which can enhance the support performance of the asphalt base material. After the membrane is rolled up and stored upright, it can also maintain the flatness of the overlapping edge in a short time after unrolling.
[0059] (3) The non-woven waterproof membrane provided by this utility model has improved overall tensile strength of the overlap edge base material after the overlap edge is reinforced with anti-wrinkle fiber non-woven fabric as the intermediate layer, and the peel strength between the rolls at the overlap edge position is also improved.
[0060] (4) The non-woven waterproof membrane provided by this utility model has a wrinkle-resistant non-woven fabric interlayer with a diamond-shaped hole structure symmetrically set on the interlayer of both sides of the membrane. This can balance the production line traction force on both sides of the membrane and ensure that the membrane is straight and without bending. Attached Figure Description
[0061] Figure 1 This is a structural schematic diagram of a high-wrinkle-resistant, overlap-edge, single-sided wet-laid waterproof membrane according to an embodiment of the present invention;
[0062] Figure 2 This is a structural schematic diagram of a high-wrinkle-resistant double-sided wet-laid waterproof membrane with overlapping edges according to an embodiment of the present utility model;
[0063] Figure 3 This is a schematic diagram of the anti-wrinkle fiber nonwoven fabric structure with a rhomboid arrangement of holes, which is the feature of this utility model.
[0064] Explanation of reference numerals in the attached diagram: 1. Polymer membrane surface layer; 2. Overlapping middle layer; 3. Asphalt layer; 4. Silicone-coated release membrane surface layer; 5. Polymer membrane base layer; 6. Upper surface overlapping layer; 7. Lower surface membrane layer; 8. Fiber nonwoven fabric with diamond-shaped arranged round holes. Detailed Implementation
[0065] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0066] Some embodiments of this utility model provide a non-woven, wet-laid waterproof membrane, such as... Figure 1 As shown, it includes the upper surface film layer (such as...) Figure 1The membrane shown includes a polymer membrane layer 1, a lower surface membrane layer 7, an asphalt layer 3, an overlap edge intermediate layer 2, and an upper surface overlap edge layer 6; wherein, the asphalt layer 3 is located between the upper surface membrane layer and the lower surface membrane layer 7, and the overlap edge intermediate layer 2 is embedded inside the asphalt layer 3 and is respectively set at the overlap edges on both sides of the waterproof membrane.
[0067] The overlapping middle layer 2 includes a nonwoven fabric with multiple holes.
[0068] In some embodiments, the plurality of holes are provided in at least three rows along the length of the waterproof membrane, and the center points of the three adjacent rows of holes are arranged in a diamond shape.
[0069] In some embodiments, the width of the nonwoven fabric is 110-115 mm, and the thickness is 0.2-0.25 mm; the pores of the nonwoven fabric are round, such as... Figure 3 The nonwoven fabric shown has rhomboidally arranged circular holes 8, with a hole diameter of 9.9~10.1 mm; the holes have the following rhomboid arrangement:
[0070] In the width direction of the fiber nonwoven fabric, the first and last round holes in the odd-numbered rows are respectively 4-6 mm away from the edge of the fiber nonwoven fabric, and the distance between the round holes is 18-22 mm.
[0071] In the width direction of the nonwoven fabric, the first and last round holes in even-numbered rows are 18-22 mm away from the edge of the nonwoven fabric, and the distance between the round holes is 18-22 mm; the vertical distance between the round holes between rows is 18-22 mm.
[0072] In some embodiments, the waterproof membrane further includes a polymer membrane base layer 5, which is embedded in the asphalt layer 3. The polymer membrane base layer 5 and the intermediate layer 2 of the overlapping sides overlap in projection along the thickness direction of the waterproof membrane. The width of the polymer membrane base layer is 920~930 mm, and the thickness is 0.08~0.11 mm.
[0073] In this invention, the polymer membrane base layer is embedded in the asphalt layer to enhance the physical tensile and elongation properties of the asphalt layer within the waterproof membrane, thereby improving the tensile and elongation properties of the waterproof membrane.
[0074] In some embodiments, the upper surface membrane layer includes a polymer film layer, and the lower surface membrane layer includes a silicone-coated release liner. Because the polymer film layer further enhances the physical tensile and elongation properties of the asphalt layer in the waterproof membrane, thus strengthening the physical tensile and elongation properties of the waterproof membrane, and the silicone-coated release liner acts as an adhesive, the non-woven wet-laid waterproof membrane only contains a single-sided adhesive layer; therefore, this type of waterproof membrane is a single-sided waterproof membrane. Figure 1 As shown.
[0075] In some implementations, such as Figure 2 As shown, the upper surface membrane layer includes a silicone-coated release membrane layer, the lower surface membrane layer includes a silicone-coated release membrane layer, and the polymer membrane base layer is adjacent to the middle layer of the overlapping edges on both sides. Since the silicone-coated release membrane layer acts as an adhesive, this non-woven wet-laid waterproof membrane is a double-sided waterproof membrane. The polymer membrane base layer, adjacent to the middle layer of the overlapping edges on both sides, is used to enhance the physical tensile strength and elongation properties of the asphalt layer and the portion connected to the overlapping edges.
[0076] In some embodiments, the lower surface film layer includes a silicone-coated release film layer, the asphalt layer includes a wet-laid modified asphalt base material, and the upper surface overlap layer includes a silicone-coated edge film layer.
[0077] Specifically, such as Figure 2 The non-woven wet-laid waterproof membrane shown has a silicone-coated release membrane layer on the lower surface, an asphalt layer including wet-laid modified asphalt base material, an upper surface overlapping layer including a silicone-coated edge membrane layer, and a polymer membrane base embedded in the asphalt layer. The projection of the polymer membrane base layer and the middle layer of the overlapping edge on both sides along the thickness direction of the waterproof membrane overlaps.
[0078] In some embodiments, the left (or one) edge of the upper surface film is recessed toward the center of the asphalt layer relative to the left edge of the asphalt layer (i.e., the left edge of the upper surface film is shorter than the left edge of the asphalt layer), the upper surface overlap layer is located at the edge of the upper surface film, and the edge of the upper surface overlap layer protrudes relative to the edge of the asphalt layer.
[0079] In this invention, the left edge of the upper surface film layer is recessed towards the center of the asphalt layer relative to the left edge of the asphalt layer, and the upper surface overlapping edge layer located on the edge of the upper surface film layer protrudes relative to the edge of the asphalt layer. This structural design facilitates the positioning of the overlapping edge, making it convenient for overlapping and positioning between multiple waterproof membranes after removing the upper surface overlapping edge layer, or for overlapping and positioning between the waterproof membrane and the material to be protected. Furthermore, the protrusion of the upper surface overlapping edge layer relative to the edge of the asphalt layer also helps to protect the edge of the asphalt layer, preventing wrinkles or curling of the left edge of the asphalt layer.
[0080] In some embodiments, the right (or opposite) edge of the upper surface film protrudes relative to the asphalt layer, which is located between the upper and lower surface films, and the width of the asphalt layer is shorter than the width of the lower surface film. This design is advantageous for protecting the right edge of the asphalt layer with the upper and lower surface films, preventing wrinkling or curling of the right edge of the asphalt layer.
[0081] In this invention, the overall thickness of the non-woven wet-laid waterproof membrane varies with the thickness of the asphalt layer.
[0082] In some embodiments, when the overall thickness of the non-woven wet-laid waterproof membrane is 1.5 mm, the thickness of the asphalt layer below the middle layer of the overlap edge is 0.6~0.8 mm, preferably 0.7~0.75 mm.
[0083] In some embodiments, when the overall thickness of the non-woven wet-laid waterproof membrane is 2.0 mm, the thickness of the asphalt layer below the middle layer of the overlap edge is 0.8~1.0 mm, preferably 0.7~0.75 mm.
[0084] In some embodiments, the width of the upper surface film layer is 930-940 mm and the thickness is 0.035-0.04 mm; the width of the lower surface film layer is 1040-1050 mm and the thickness is 0.035-0.04 mm; and the width of the upper surface overlapping layer is 120-130 mm and the thickness is 0.025-0.03 mm.
[0085] In some embodiments, the nonwoven fabric comprises one or more composite fibers selected from PP, PA, and PVA fibers. The nonwoven fabric is wrinkle-resistant, has a basis weight of 25-35 g / m², a width of 110-115 mm, and a thickness of 0.2-0.25 mm. The nonwoven fabric is prepared by blending; the pores in the nonwoven fabric are formed by infrared heat treatment perforation.
[0086] In some embodiments, the polymer film layer 1 or the polymer film base layer 5 includes one of a high-strength composite film, a polyester-reinforced film, and a cross-laminated film. For example, the high-strength composite film includes HDPE; the polyester-reinforced film includes PET film; and the cross-laminated film includes polyethylene cross-laminated film.
[0087] In some embodiments, the wet-laid modified asphalt base material comprises heavy-grade petroleum 70# / 90# asphalt, a softener, and a modifier. Optionally, the modifier comprises at least one of styrene-butadiene rubber (SBR), styrene-butadiene prepolymer (SBS), hydrogenated resin, and terpene resin.
[0088] In some embodiments, the silicone-coated release film layer in the lower surface film layer 7 includes a silicone-coated polyester (PET) release film or a silicone-modified polyethylene (PE) release film.
[0089] In some embodiments, the silicone-coated isolation film layer in the upper surface overlap layer 6 includes a silicone-coated polyester (PET) release film.
[0090] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Experimental methods in the following embodiments without specific conditions are generally determined according to national standards. If no corresponding national standard exists, general international standards, conventional conditions, or conditions recommended by the manufacturer shall be followed. Unless otherwise specified, all raw materials, reagents, instruments, and equipment used in this invention can be purchased commercially or prepared using existing methods.
[0091] Example 1
[0092] A type of non-woven wet-laid waterproof membrane (single-sided, according to GB / T35467-2017-HS 1.5-20 for wet-laid waterproof membranes), such as... Figure 1 As shown, it includes a polymer membrane layer 1 (i.e., the upper surface membrane layer), an overlapping middle layer 2 (a non-woven fiber fabric with a diamond-shaped pore structure), an asphalt layer 3 (using wet-laid modified asphalt base material), an upper surface overlapping layer 6, and a lower surface membrane layer 7 (a silicone-coated isolation membrane layer); wherein, the asphalt layer 3 is located between the polymer membrane layer 1 and the lower surface membrane layer 7, the overlapping middle layer 2 is embedded inside the asphalt layer 3 and is respectively set at the overlapping edges on both sides of the waterproof membrane; the left edge of the polymer membrane layer 1 is recessed towards the center of the asphalt layer 3 relative to the left edge of the asphalt layer 3, the upper surface overlapping layer 6 is located at the edge of the polymer membrane layer 1, and the edge of the upper surface overlapping layer 6 protrudes relative to the edge of the asphalt layer 3; the right edge of the polymer membrane layer 1 protrudes towards the edge relative to the asphalt layer 3, and the width of the asphalt layer 3 is shorter than the width of the lower surface membrane.
[0093] Specifically, the polymer membrane surface layer 1 is made of one of high-strength composite film (HDPE), polyester reinforced film (PET), or polyethylene cross-laminated film. Its tensile strength and elongation performance meet the relevant technical indicators in the national standard "Wet-laid Waterproof Membrane" GB / T35467-2017. Its width is 930~940 mm and its thickness is 0.035~0.04 mm.
[0094] The overlapping middle layer 2 includes a non-woven fiber fabric with multiple circular holes. The center points of three adjacent rows of circular holes are arranged in a rhombus shape. The circular holes are perforated by infrared heat treatment to ensure smooth edges without gaps or damage, with a diameter of 10±0.1mm. Specifically, the rhomboid arrangement of the holes in the non-woven fiber fabric is as follows: Figure 3 As shown:
[0095] In the width direction of the nonwoven fabric, the first round hole in the first row is 5 mm from the edge of the nonwoven fabric, 20 mm from the second round hole in the first row, 20 mm from the third round hole in the first row, and so on, for a total of 4 round holes in the first row. The fourth round hole is also 5 mm from the edge of the fabric on the other side. In the second row, the first round hole is 20 mm from the edge of the fabric, 20 mm from the second round hole in the second row on the other side, and so on, for a total of 3 round holes in the second row. The third round hole in the second row is also 20 mm from the edge of the fabric on the other side, and so on. The vertical spacing between the round holes in each row is 20 mm. The nonwoven fabric is made of one or more blends of PP, PA, and PVA fibers, modified by needle punching, with a width of 110~115 mm, a thickness of 0.2~0.25 mm, and a basis weight of 25~35 g / m².
[0096] In asphalt layer 3, the wet-laid modified asphalt base material is prepared by mixing heavy-grade petroleum 70# / 90# asphalt, softener, etc. in a reactor at high temperature, adding at least one modifier from styrene-butadiene rubber (SBR), styrene-butadiene prepolymer (SBS), hydrogenated resin, and terpene resin, and then grinding and homogenizing it in a colloid mill at high temperature, and finally adding filler and mixing evenly to obtain the modified asphalt base material. The performance meets the relevant technical indicators in the national standard for wet-laid waterproof membranes GB / T35467-2017. The thickness of the two coats of the wet-laid modified asphalt base material is controlled at 0.6~0.8 mm, preferably 0.7~0.75 mm.
[0097] The upper surface overlapping edge layer 6 includes a silicone-coated isolation edge film layer, which is made of silicone-coated polyester (PET) release film with a width of 120~130 mm and a thickness of 0.025~0.03 mm;
[0098] In the lower surface film layer 7, the silicone-coated release layer is a silicone-coated polyester (PET) release film or a silicone-modified polyethylene (PE) release film with a width of 1040~1050 mm and a thickness of 0.035~0.04 mm.
[0099] In this embodiment, during the production of the non-woven wet-laid waterproof membrane, the wet-laid modified bitumen base material (bitumen layer 3) is applied onto the silicone-coated isolation layer (lower surface film layer 7) using a primary oiling equipment on the production line. Then, non-woven fabrics (overlapping edge middle layer 2) are applied to the wet-laid modified bitumen base material via edge film rollers. Finally, a secondary oiling thickness setting equipment applies the wet-laid modified bitumen base material again, ensuring that the non-woven fabrics (i.e., the overlapping edge middle layer 2) are embedded within the bitumen layer 3. The material can be impregnated and tightly bonded to the non-woven fiber layer under high temperature and flow conditions. At the same time, the upper and lower asphalt base materials are penetrated through the pores of the non-woven fiber layer to form a discontinuous physical separation structure. Finally, the polymer film layer 1 and the silicone-coated isolation edge film layer (i.e., the upper surface overlapping edge layer 6) are simultaneously covered on the top wet-laid modified asphalt base material. After being cooled and formed by pressure rollers, it is formed into an integral sheet, and a high wrinkle-resistant overlapping edge non-woven single-sided waterproof membrane is obtained, namely the target non-woven wet-laid waterproof membrane.
[0100] After the waterproof membrane is unrolled from the production line, the overlapping edges are smooth and straight. After being rolled up and stored upright for 30 days, a construction test is conducted by unrolling the membrane again. The long side overlap effect is fully bonded, with no air bubbles or wrinkles.
[0101] Example 2
[0102] A type of non-woven wet-laid waterproof membrane (double-sided, according to GB / T35467-2017-HD 1.5-20 for wet-laid waterproof membranes), such as... Figure 2 As shown, it includes a silicone-coated release layer 4 (i.e., the upper surface film layer), an overlapping middle layer 2 (a non-woven fabric with a diamond-shaped perforated structure), an asphalt layer 3 (using wet-laid modified asphalt base material), a polymer film base layer 5 (using a PET polyester film base), an upper surface overlapping layer 6, and a lower surface film layer 7 (a silicone-coated release film layer). The left edge of the silicone-coated release layer 4 is recessed towards the center of the asphalt layer 3 relative to its left edge. The upper surface overlapping layer 6 is located at the edge of the silicone-coated release layer 4, and its edge protrudes relative to the edge of the asphalt layer 3. The right edge of the silicone-coated release layer 4 protrudes relative to the edge of the asphalt layer 3, and the width of the asphalt layer 3 is shorter than the width of the lower surface film layer. A detailed explanation follows.
[0103] The silicone-coated release layer 4 is a silicone-coated polyester (PET) release film or a silicone-modified polyethylene (PE) release film, with a width of 930~940mm and a thickness of 0.035~0.04mm;
[0104] The overlapping edge middle layer 2 is the same as that in Example 1.
[0105] Asphalt layer 3 is the same as that in Example 1.
[0106] The polymer membrane base layer 5 is located between the asphalt layer 3 and the overlapping intermediate layer 2. The polymer membrane base layer 5 is made of PET polyester film, and its tensile strength and elongation performance meet the relevant technical indicators in the national standard "Wet-laid Waterproof Membrane" GB / T35467-2017. The thickness is 0.08~0.11mm and the width is 920~930mm.
[0107] The upper surface overlapping layer 6 and the lower surface film layer 7 are the same as those in Example 1.
[0108] In this embodiment, during the production of the non-woven wet-laid waterproof membrane, the wet-laid modified bitumen base material (bitumen layer 3) is applied to the lower surface silicone-coated isolation layer (lower surface film layer 7) using a primary oiling equipment on the production line. Then, the fiber nonwoven fabric (overlapping edge middle layer 2) and the polymer film base layer 5 are simultaneously applied to the wet-laid modified bitumen base material (i.e., the lower bitumen layer in bitumen layer 3) using a secondary oiling thickness setting equipment. Finally, the wet-laid modified bitumen base material (i.e., the upper bitumen layer in bitumen layer 3) is applied again using a secondary oiling thickness setting equipment, so that the fiber nonwoven fabric (overlapping edge middle layer)... 2) The polymer membrane base layer 5 is located between the upper and lower asphalt layers. The modified asphalt base material can penetrate the fiber non-woven fabric layer and bond tightly under high temperature and flow conditions. At the same time, the upper and lower asphalt base materials are penetrated through the pores of the fiber non-woven fabric layer to form a discontinuous physical separation structure. Finally, the silicone-coated isolation membrane 4 and the silicone-coated isolation edge membrane layer (i.e., the upper surface overlapping edge layer 6) are simultaneously covered on the uppermost wet-laid modified asphalt base material. After being cooled and formed by pressure rollers, it is formed into an integral sheet, and a high wrinkle-resistant overlapping edge non-woven wet-laid double-sided waterproof membrane is obtained, namely the target non-woven wet-laid waterproof membrane.
[0109] After the waterproof membrane is unrolled from the production line, the overlapping edges are smooth and straight. After being rolled up and stored upright for 30 days, a construction test is conducted by unrolling the membrane again. The long side overlap effect is fully bonded, with no air bubbles or wrinkles.
Claims
1. A non-woven, wet-laid waterproof membrane, characterized in that, The waterproof membrane includes an upper surface membrane layer, a lower surface membrane layer, an asphalt layer, an overlap edge intermediate layer, and an upper surface overlap edge layer; wherein, the asphalt layer is located between the upper surface membrane layer and the lower surface membrane layer, and the overlap edge intermediate layer is embedded inside the asphalt layer and is respectively provided at the overlap edges on both sides of the waterproof membrane. The overlapping edge middle layer includes a non-woven fiber fabric with multiple holes.
2. The non-woven wet-laid waterproof membrane according to claim 1, characterized in that, The plurality of holes are provided in at least three rows along the length of the waterproof membrane, and the center points of the three adjacent rows of holes are arranged in a diamond shape.
3. The non-woven wet-laid waterproof membrane according to claim 2, characterized in that, It also includes a polymer membrane base layer, which is embedded in the asphalt layer, and the projection of the polymer membrane base layer and the middle layer of the overlapping edge on both sides along the thickness direction of the waterproof membrane overlaps.
4. The non-woven wet-laid waterproof membrane according to any one of claims 1-3, characterized in that, The upper surface film layer includes a polymer film layer, and the lower surface film layer includes a silicon-coated isolation film layer.
5. The non-woven wet-laid waterproof membrane according to claim 3, characterized in that, The upper surface film layer includes a silicon-coated isolation film layer, the lower surface film layer includes a silicon-coated isolation film layer, and the polymer film base layer is adjacent to the middle layer of the overlapping edges on both sides.
6. The non-woven wet-laid waterproof membrane according to any one of claims 1-2, characterized in that, The upper surface overlap layer includes a silicone-coated isolation edge film layer.
7. The non-woven wet-laid waterproof membrane according to any one of claims 1-2, characterized in that, The nonwoven fabric has a width of 110-115 mm and a thickness of 0.2-0.25 mm.
8. The non-woven wet-laid waterproof membrane according to claim 2, characterized in that, The pores in the nonwoven fabric are round. The diameter of the circular hole is 9.9~10.1 mm.
9. The non-woven wet-laid waterproof membrane according to claim 7, characterized in that, The holes have the following diamond-shaped arrangement: In the width direction of the fiber nonwoven fabric, the first and last round holes in the odd-numbered rows are respectively 4-6 mm away from the edge of the fiber nonwoven fabric, and the distance between the round holes is 18-22 mm. In the width direction of the nonwoven fabric, the first and last round holes in even-numbered rows are 18-22 mm away from the edge of the nonwoven fabric, and the distance between the round holes is 18-22 mm; the vertical distance between the round holes between rows is 18-22 mm.
10. The non-woven wet-laid waterproof membrane according to any one of claims 1-3, characterized in that, The left edge of the upper surface film layer is recessed towards the center of the asphalt layer relative to the left edge of the asphalt layer; the upper surface overlapping layer is located at the edge of the upper surface film layer, and the edge of the upper surface overlapping layer protrudes relative to the edge of the asphalt layer; or When the overall thickness of the non-woven wet-laid waterproof membrane is 1.5 mm, the thickness of the asphalt layer below the middle layer of the overlap edge is 0.6~0.8 mm; or When the overall thickness of the non-woven wet-laid waterproof membrane is 2.0 mm, the thickness of the asphalt layer below the middle layer of the overlap edge is 0.8~1.0 mm.