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Help CenterCustom Production of High-density Polyethylene Waterproof and Drainage Protection Boards, Composite Drainage Boards, Siphon Drainage Systems
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Analysis of industry pain points: In modern construction projects, concrete carbonation and corrosion caused by underground space leakage and roof water accumulation have become common problems in the industry. Traditional drainage materials often lead to system collapse due to insufficient compressive strength, and irregular base surfaces are more likely to have drainage blind spots. According to statistics from the Ministry of Housing and Urban - Rural Development, the maintenance cost of basement leakage can reach more than 3 times the initial construction cost, and the vegetation mortality rate of planted roofs due to poor drainage is as high as 35%.
As Jiamei New Materials Co., Ltd., which has been deeply involved in the drainage field for more than a decade, we rely on a 32,000㎡ production base in Tai'an High - tech Development Zone and have independently developed a 'blockchain' intelligent drainage and collection system. With an annual production capacity of 50 million square meters guaranteed by 25 automated production lines, we have successfully solved the technical bottleneck of organized drainage on zero - slope roofs. This solution uses polymer material modification technology to increase the compressive strength of the drainage board to 1.8 times the industry standard, achieving the combination of 'three - dimensional drainage + active waterproofing'.
- Enhanced siphon effect: The conical column design forms a negative pressure area, and the flow rate is 2.3 times that of conventional gravity drainage.
- Three - dimensional drainage network: The height of the boss is 8mm±0.2mm, forming a stable water - guiding channel.
- Anti - clogging system: It has built - in permeable micropores with a diameter of 0.8mm, and the water permeability rate is ≥0.28cm/s.
| Parameter category | Technical indicators | Test standard |
|---|---|---|
| Material composition | HDPE + PP fiber - reinforced layer | GB/T1040.2 |
| Long - term compression resistance | ≥450kPa (attenuation rate | GB/T9647 |
| Chemical resistance | No corrosion in the pH3 - 11 environment | ISO4586 |
| Operating temperature | -35℃ to +80℃ | ASTMD746 |
In a commercial complex project in Zhengzhou, we successfully solved the drainage problem of irregular foundations through customized attapulgite spacing adjustment (adjustable range of 5cm). Verified by the China Building Materials Testing Center, under heavy rain conditions (50mm/h), the drainage efficiency of this system is 67% higher than that of traditional solutions, and it effectively reduces the structural load by 18kg/m².
Advantages of customized production: Support the addition of raw material masterbatches for color coding management; Thickness tolerance is controlled within ±0.05mm; The maximum width of the roll that can be produced is 3.2m, reducing on - site lap losses. Through the patented sticky - bar self - adhesive layer technology (Patent No. ZL201810143210.6), molecular - level bonding with waterproofing membranes is achieved, and the peel strength reaches 3.5N/mm.
- The flatness of the base surface should be controlled within 5mm/2m, and the orientation of the bosses should be kept consistent
- Hot - melt welding should be used at the joints, and the lap width should be ≥80mm
- The installation slope of the siphon trough should be ≥0.3%, and a sediment observation well should be set every 30m
As an enterprise with the second - level construction qualification for waterproofing, anti - corrosion, and thermal insulation, we have served over 2000 engineering projects. Relying on 4 invention patents and 22 utility model patents (such as the three - dimensional forming device for drainage boards ZL202020543211.X), and in combination with 6 software copyrights, we can achieve intelligent drainage simulation. The production system certified by the Henan Waterproofing Association ensures that each batch of products passes the 48 - hour water pressure test.
According to the precipitation characteristics of different regions, we suggest: For projects in North China, it is advisable to configure water storage modules for rainwater recovery; In South China, ultraviolet - resistance treatment should be strengthened; For underground garage projects, a red warning layer is recommended. Welcome to call our technical team to obtain the "Load Calculation Guide for Siphon Drainage Systems". We will provide the optimal drainage board selection plan based on parameters such as your concrete grade and soil covering thickness.
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Q: Is the HDPE material prone to embrittlement in low - temperature environments?
A: This product uses copolymerization modification technology. In the low-temperature impact test at -35°C (ASTM D746 standard), the retention rate of notched impact strength is >85%. By adding 3% elastomer modifier, the material still maintains good toughness under freeze-thaw cycle conditions and is suitable for engineering in alpine regions. -
Q: How to solve the compatibility problem between the drainage board and the waterproof membrane?
A: The patented sticky layer (ZL201810143210.6) developed by us uses a non-bituminous CMA reactive adhesive, which forms a chemical bond with the mainstream SBS/TPO membranes. Verified by the National Building Materials Testing Center, the bonding strength attenuation rate after thermal aging at 80°C is -
Q: How does the siphon drainage system ensure the flow rate on a zero-slope roof?
A: Through the design of the conical column structure, a local negative pressure area is formed in the gap between the bosses. The measured data shows that the siphon effect can be activated when the water film thickness reaches 3mm, and the flow rate can reach 0.6m/s. Combined with the diversion wing design of the patented drainage channel (ZL202022344587.8), directional drainage is achieved without a slope. -
Q: How to prevent root penetration in the green roof system?
A: The three-layer composite structure includes a 0.6mm thick copper base root barrier layer. After a 4000-hour test according to the EN13948 standard, the root penetration rate is zero. At the same time, it is recommended to lay a 400g/m² non-woven fabric between the backfill soil and the drainage board to double ensure the safety of the system. -
Q: How long does the customized production cycle take?
A: There is a stock of 20000㎡ for standard-specification products, which can be shipped on the same day. It takes 5 - 7 days for customization of special colors and thicknesses. The CNC waterjet cutting process is used for cutting special-shaped sizes, with an accuracy of ±0.5mm. Batch orders support exclusive production lines for 48-hour delivery. -
Q: What should be noted in the later maintenance of the system?
A: It is recommended to flush the pipeline through the sediment observation well every two years. For areas with an annual precipitation >1200mm, a removable filter screen (pore size 1.2mm) can be installed at the entrance of the drainage channel. Our IoT monitoring system can upload flow data in real-time to achieve preventive maintenance.
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