GB T 4744 Water penetration resistance of technical fabrics
The P.R.C. national standard, GB T 4744-1995, specifies the method for determining the water penetration resistance of technical fabrics. This test is essential for quality assurance and compliance in industries that rely on waterproof or water-resistant textiles such as construction, outdoor equipment, and automotive sectors. The standard provides a standardized approach to measure how effectively these fabrics resist water penetration under defined conditions.
The testing procedure involves subjecting the specimen to a steady stream of water from above until water starts to penetrate through the fabric. Key factors that influence the test include the angle at which water is applied, the pressure exerted on the sample, and the duration for which the test continues. A lower water penetration value indicates better resistance against water ingress.
For accurate testing, the specimen must be prepared according to specified dimensions and weights provided in GB T 4744-1995. The apparatus used should comply with the requirements set forth by this standard. This ensures consistent and comparable results across different laboratories.
The primary outcome of this test is the water penetration resistance value, which can vary widely depending on the fabric type and its intended use. For instance, high-performance outdoor gear requires higher resistance values compared to less demanding applications like interior curtains.
| Standard Number | Title |
|---|---|
| GB T 4744-1995 | Determination of Water Penetration Resistance of Technical Fabrics |
| Equipment | Description |
|---|---|
| Water supply system | Complies with GB T 4744-1995 specifications for water pressure and flow rate. |
| Specimen holder | Ensures the specimen is held in a fixed position during testing. |
| Measuring device | Records the volume of water that penetrates through the fabric. |
Applied Standards
| Equipment | Description |
|---|---|
| Water supply system | Complies with GB T 4744-1995 specifications for water pressure and flow rate. |
| Specimen holder | Ensures the specimen is held in a fixed position during testing. |
| Measuring device | Records the volume of water that penetrates through the fabric. |
The GB T 4744-1995 standard ensures consistency and reliability across various laboratories conducting this test. Compliance with these standards is crucial for manufacturers to ensure their products meet quality and safety requirements.
Competitive Advantage and Market Impact
Compliance with GB T 4744-1995 can provide significant competitive advantages in the market. For instance, companies demonstrating adherence to this standard may attract more customers seeking high-quality, durable products. Additionally, meeting national standards like this one often translates into better standing during regulatory audits and inspections.
From an R&D perspective, understanding the nuances of GB T 4744-1995 helps in developing new materials with enhanced water resistance properties. This knowledge can also lead to innovations that improve product performance and extend shelf life.
Use Cases and Application Examples
- Briefly discuss how the test is used in different sectors like construction, outdoor gear, and automotive parts.
- Provide examples of products that benefit from this testing method.
| Standard Number | Title |
|---|---|
| GB T 4744-1995 | Determination of Water Penetration Resistance of Technical Fabrics |
The test results from GB T 4744-1995 are particularly valuable for manufacturers in the construction and outdoor gear sectors. For example, waterproof tents and jackets require high water resistance to ensure user safety and satisfaction.
