Flame-retardant fabrics are usually classified according to their flame-retardant properties. The following are common flame retardant fabric grades:
1. NFPA 701 rating:
NFPA 701 is a standard developed by the National Fire Protection Association to evaluate the flame resistance of textile materials. According to the NFPA 701 standard, flame retardant fabrics can be divided into the following grades:
- NFPA 701: This grade is for upholstery textiles such as curtains, curtain linings, curtain coverings, etc. These fabrics need to burn for a limited time at a specific flame exposure, with a controlled rate of flame spread.
- NFPA 701 Small Scale: This scale applies to fabrics for bedding and certain interior furniture. Compared with the NFPA 701 grade, NFPA 701 Small Scale has stricter requirements, and the burning time of the fabric in the small size burning test is shorter.
2. EN 13773 class:
EN 13773 is a European standard for evaluating the flame retardancy of curtains and curtain linings used in public places such as hotels and hospitals. According to the EN 13773 standard, flame retardant fabrics can be divided into the following grades:
- EN 13773-1: This grade applies to curtains and curtain linings. Fabrics need to burn for a limited time at a specific flame exposure with a controlled rate of flame spread.
- EN 13773-2: This class applies to internal parts of curtains and curtain linings, such as straps and hooks. These parts need to have some flame-retardant properties to avoid the spread of fire.
3. ASTM D6413 Grade:
ASTM D6413 is a standard developed by the American Society for Testing and Materials to evaluate flame-retardant properties of materials, including fabrics. According to the ASTM D6413 standard, flame retardant fabrics can be divided into the following grades:
- ASTM D6413: This grade is for flame retardant fabrics for industrial and commercial applications. Fabrics need to burn for a limited time at a specific flame exposure with a controlled rate of flame spread.
- ASTM D6413 FR Cotton: This grade is for flame retardant cotton fabrics. Cotton fabrics need to burn for a limited time at a specific flame exposure, with a controlled rate of flame spread.
The above are some common flame-retardant fabric grades, and different countries and regions may have different standards and grade systems. When selecting flame-retardant fabrics, the grades that meet the corresponding standards should be selected according to specific applications and requirements to ensure that the flame-retardant performance of the material meets the requirements. At the same time, it is recommended to check the relevant certification and test reports when purchasing flame-retardant fabrics to ensure that they meet the requirements of applicable standards.