Why FR zipper so expensive? Kevlar VS Nomex

2022-10-18

  • You might be wondering why FR zippers are more expensive than standard zippers. Today, we'll discuss some of the fabrics we use for our FR zippers and explain how they can withstand fire.


    When exposed to fire or other ignition sources, flame-resistant (FR) materials do not easily catch fire or melt.

    Inherently flame-resistant fabrics and flame-resistant fabrics treated chemically are the two main types of flame-resistant fabrics. Fabrics that are naturally fire resistant due to their chemical composition are known as inherently flame-resistant fabrics. Chemical application of a flame-resistant chemical results in the chemical treatment of flame-resistant fabrics (the underlying fabric may or may not also be flame resistant).


    Fabrics that withstand flames are frequently referred to as fire-retardant fabrics.

    In employment environments with high fire threats, advanced occupational health and safety jurisdictions mandate employees to wear flame-resistant materials. Fabrics with certified fire resistance are referred to as "FR-rated" in North America.


    A fabric product must undergo testing by a certified testing laboratory in order to be designated as FR-rated. A recognised testing standard, such as ASTM F1930 - Standard Test Method for Evaluation of Flame Resistant Clothing for Protection Against Flash Fire Simulations Using an Instrumented Manikin, must be followed in order for the tests utilised to determine the fire resistance of a specific fabric.


    A given piece of cloth cannot be tested again to make sure its flame-resistant properties are intact because FR testing is destructive in nature. For this reason, it is the responsibility of both employers and employees to check flame-resistant clothes and other fabrics for damage and to stop using them if any are discovered. If the protection provided by the chemical treatment is known to degrade with time, chemically treated fabrics may likewise have a short lifespan.


    The NFPA standardises the criteria used to establish the level of flame resistance required for personnel to be able to work safely inside a particular workplace and rates fabrics according to four different levels of flame resistance. The material's capacity to self-extinguish after being removed from an ignition source increases with the FR rating.


    Wool, Kevlar, and Nomex are three textiles that are frequently flame-resistant. The most prevalent naturally occurring FR material is wool. Chemically treated FR fabrics are typically constructed of a poly-cotton blend and cost less than naturally occurring FR fabrics, but they also frequently wear out more quickly. Beyond variations in price and toughness, chemically treated fabrics often offer superior protection against splashes of molten metal than the majority of naturally FR fabrics.


    Contact us today for more information or visit our new website, www.frhoo.com for all types of FR zipper you might be interested.


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