{"id":6536,"date":"2025-04-02T17:00:24","date_gmt":"2025-04-02T09:00:24","guid":{"rendered":"https:\/\/www.air-tester.com\/?p=6536"},"modified":"2025-08-01T14:53:58","modified_gmt":"2025-08-01T06:53:58","slug":"fang-shui-tou-qi-mo-zong-he","status":"publish","type":"post","link":"https:\/\/www.air-tester.com\/en\/fang-shui-tou-qi-mo-zong-he.html\/","title":{"rendered":"Comprehensive tester for waterproof and breathable membrane, guarding the quality of products! Synchronized testing of waterproof and breathability, efficient and accurate"},"content":{"rendered":"

1. Introduction<\/h2>\n\n\n\n

Waterproof Breathable Membrane is a unique material that blocks liquid water while allowing water vapor and air to pass through.<\/strong>This dual function makes them indispensable in areas such as outdoor clothing, medical consumables, construction materials, automotive components and electronic devices. To ensure product quality, rigorous testing is required throughout the entire process from development to production.<\/p>\n\n\n\n

\"Waterproof
Breathable membrane blocks liquid water while allowing water vapor and air to pass through<\/em><\/figcaption><\/figure>\n\n\n\n

2. Breathable membrane fundamentals<\/h2>\n\n\n\n

2.1 Waterproofing principles<\/h3>\n\n\n\n

Water resistance is achieved by<\/p>\n\n\n\n

    \n
  • Use of non-absorbent materials<\/li>\n\n\n\n
  • Fabrication of microporous structures smaller than the size of a water droplet<\/li>\n<\/ul>\n\n\n\n

    The effectiveness of waterproofing is usually expressed in terms of hydrostatic pressure, which is the maximum water pressure that the material can withstand before leakage.<\/strong><\/p>\n\n\n\n

    2.2 Venting Principle<\/h3>\n\n\n\n

    Breathability is achieved by:<\/p>\n\n\n\n

      \n
    • Creating micropores that are larger than water vapor molecules but smaller than water droplets<\/li>\n\n\n\n
    • Use of special materials that absorb and release water molecules<\/li>\n<\/ul>\n\n\n\n

      The main indicators include moisture vapor transmission rate and air permeability.<\/strong><\/p>\n\n\n\n

      2.3 Key performance indicators<\/h3>\n\n\n\n
      Norm<\/strong><\/td>clarification<\/strong><\/td>unit (of measure)<\/strong><\/td>significance<\/strong><\/td><\/tr><\/thead>
      waterproof rating<\/td>Maximum water pressure the material can withstand<\/td>mmH\u2082O or psi<\/td>The higher the value, the better the waterproofness<\/td><\/tr>
      permeability rating<\/td>Amount of water vapor passing per unit area per unit time<\/td>g\/m\u00b2\/24h<\/td>The higher the value, the better the breathability<\/td><\/tr>
      Air permeability<\/td>Rate of air passage through the membrane<\/td>cm\u00b3\/s\/cm\u00b2 or L\/m\u00b2\/s<\/td>Reflects air circulation capacity<\/td><\/tr>
      water repellency<\/td>Surface resistance to wetting<\/td>rank, class, category<\/td>Reflects surface finish<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      3. Areas of application and testing requirements<\/h2>\n\n\n\n

      3.1 Outdoor clothing and equipment<\/h3>\n\n\n\n
        \n
      • demand (economics)<\/strong>: High level of waterproofness balanced with breathability<\/li>\n\n\n\n
      • Test Focus<\/strong>: Simulates real-world usage conditions, including rain, wind, and motion pressure<\/li>\n\n\n\n
      • (an official) standard<\/strong>: Durability and comfort need to be considered<\/li>\n<\/ul>\n\n\n\n

        3.2 Medical supplies<\/h3>\n\n\n\n
          \n
        • appliance<\/strong>: Medical dressings, surgical gowns and protective clothing<\/li>\n\n\n\n
        • Test Focus<\/strong>: ability to block liquids, bacteria and viruses with breathability<\/li>\n\n\n\n
        • special requirement<\/strong>: Sterility and biocompatibility<\/li>\n<\/ul>\n\n\n\n
          \"\u9632\u6c34\u900f\u6c14\u819c\u7efc\u5408\u6d4b\u8bd5\u4eea\uff0c\u5b88\u62a4\u4ea7\u54c1\u54c1\u8d28\uff01\u9632\u6c34\u3001\u900f\u6c14\u540c\u6b65\u68c0\u6d4b\uff0c\u9ad8\u6548\u7cbe\u51c6\u63d2\u56fe1\"
          Waterproof Breathable Membrane in Medical Supplies<\/em><\/figcaption><\/figure>\n\n\n\n

          3.3 Construction materials<\/h3>\n\n\n\n
            \n
          • appliance<\/strong>: Polymer waterproofing membrane, waterproofing roll-roofing, waterproofing coatings, etc.<\/li>\n\n\n\n
          • Test Focus<\/strong>: Long-term durability and resistance to environmental factors<\/li>\n\n\n\n
          • Key indicators<\/strong>: Water pressure resistance and air permeability<\/li>\n<\/ul>\n\n\n\n

            3.4 Automobile accessories<\/h3>\n\n\n\n
              \n
            • appliance<\/strong>: Automotive sensors, radar, chargers, motors, inverters, battery packs, lights, etc.<\/li>\n\n\n\n
            • Test Focus<\/strong>: Resistance to automotive fluids and environmental adaptability<\/li>\n\n\n\n
            • special requirement<\/strong>: Reliability under extreme conditions<\/li>\n<\/ul>\n\n\n\n
              \"\u9632\u6c34\u900f\u6c14\u819c\u7efc\u5408\u6d4b\u8bd5\u4eea\uff0c\u5b88\u62a4\u4ea7\u54c1\u54c1\u8d28\uff01\u9632\u6c34\u3001\u900f\u6c14\u540c\u6b65\u68c0\u6d4b\uff0c\u9ad8\u6548\u7cbe\u51c6\u63d2\u56fe2\"
              Application of waterproof and breathable membrane in automobile parts<\/em><\/figcaption><\/figure>\n\n\n\n

              3.5 Other industrial and consumer applications<\/h3>\n\n\n\n

              In addition to areas such as those mentioned above, waterproof breathable membranes are used in a variety of other industrial and consumer products.This includes filtration systems, protective packaging, and protection of sensitive electronic equipment from moisture and dust.<\/strong><\/p>\n\n\n\n

              The specific testing requirements for these applications depend heavily on the intended use of the membrane. The emphasis is on balancing the necessary barrier properties with the desired level of air permeability or air flow.<\/p>\n\n\n\n

              \n

              For example, in electronic devices, theBreathable membranes (also called waterproof acoustically permeable membranes) must prevent water and dust from entering while allowing for pressure equalization and sound transmission.<\/strong><\/p>\n<\/blockquote>\n\n\n\n

              The versatility of waterproof and breathable membranes leads to a wide range of testing needs.Precision Engineering can customize test solutions to meet customer-specific application requirements.<\/strong><\/p>\n\n\n\n

              4. Testing rationale and methodology<\/h2>\n\n\n\n

              4.1 Moisture Transmission Rate Test<\/h3>\n\n\n\n

              principle<\/strong>: Measurement of the rate at which water vapor passes through a material under controlled conditions<\/p>\n\n\n\n

              methodologies<\/strong>::<\/p>\n\n\n\n

                \n
              • cupcake method<\/strong>: Samples are sealed on a container with a desiccant or water and determined by weight change.<\/li>\n\n\n\n
              • sweating hot plate method<\/strong>: Simulation of human skin, breathability resistance measured by energy consumption<\/li>\n<\/ul>\n\n\n\n

                (an official) standard<\/strong>ASTM E96\u3001ISO 2528\u3001ISO 11092\u3001GB\/T 16928 etc.<\/p>\n\n\n\n

                4.2 Air permeability test<\/h3>\n\n\n\n

                principle<\/strong>: Measurement of the rate at which air passes through a material at a given pressure difference
                methodologies<\/strong>: The sample is fixed in the tester and the air flow rate and differential pressure are measured.
                (an official) standard<\/strong>: EN ISO 9237, ASTM D737, GB\/T 5453, etc.<\/p>\n\n\n\n

                4.3 Water resistance test<\/h3>\n\n\n\n

                4.3.1 Hydrostatic pressure test<\/h4>\n\n\n\n

                principle<\/strong>: Apply increasing water pressure until penetration
                methodologies<\/strong>: Fix the sample in the tester, apply water pressure and observe the penetration point.
                (an official) standard<\/strong>GB\/T 4744, ISO 811, AATCC 127, etc.<\/p>\n\n\n\n

                4.3.2 Water repellency test<\/h4>\n\n\n\n

                principle<\/strong>: Assessment of surface resistance to wetting
                methodologies<\/strong>: Spray test, impact penetration test, etc.
                (an official) standard<\/strong>AATCC 22\u3001ISO 4920\u3001GB\/T 4745 etc.<\/p>\n\n\n\n

                5. Production-wide testing applications<\/h2>\n\n\n\n

                5.1 Production phase<\/h3>\n\n\n\n
                  \n
                • Online monitoring of thickness and uniformity<\/li>\n\n\n\n
                • Batch sample quality control<\/li>\n\n\n\n
                • Timely correction of deviations<\/li>\n<\/ul>\n\n\n\n

                  5.2 Research and development phase<\/h3>\n\n\n\n
                    \n
                  • Systematic evaluation of new material properties<\/li>\n\n\n\n
                  • Optimization of production parameters<\/li>\n\n\n\n
                  • Comparative Performance Analysis<\/li>\n<\/ul>\n\n\n\n

                    5.3 Quality control<\/h3>\n\n\n\n
                      \n
                    • Finished Product Compliance Verification<\/li>\n\n\n\n
                    • Joint and structural integrity testing<\/li>\n\n\n\n
                    • Ensure compliance with industry standards<\/li>\n<\/ul>\n\n\n\n

                      6. T-Chen Engineering Gas Permeable Film Testing Solution<\/h2>\n\n\n\n

                      6.1 Technical characteristics<\/h3>\n\n\n\n
                        \n
                      • A new test platform that simultaneously evaluates waterproofness and breathability, instead of a traditional solution.<\/li>\n\n\n\n
                      • Test the waterproof performance of the membrane by simulating water penetration and observe whether there is water penetration or water droplet formation.<\/li>\n\n\n\n
                      • Testing the breathability of the membrane to ensure that water vapor and air can escape smoothly<\/li>\n\n\n\n
                      • Support a variety of international test standards, parameter customization settings<\/li>\n<\/ul>\n\n\n\n