Lab coats have been used for decades, but they have typically been made from cotton or polyester/cotton blends with the primary purpose being to keep foreign materials off of the clothing worn under the coat. Flame-resistant (FR) lab coats have also been available for years, but they have not been widely used. However, the use of FR lab coats in university labs has become increasingly important due to a number of recent accidents related to fire and clothing ignition. Having PPE that combines durable FR protection with inadvertent chemical-splash protection (CP), makes it ideal for many laboratories. This technical brief outlines the importance of FR clothing in laboratories. Read on the learn more.
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Have you ever wondered how FR apparel came to be? Believe it or not, the earliest uses of flame resistant materials can be traced back to Ancient Greece! Needless to say, a few things have changed over the centuries. This whitepaper will take you through the history of FR fabrics, from the days of antiquity to its modern day applications.
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There’s a lot of confusion when it comes to the terms “treated” and “inherent” FR. What’s the difference? And, more importantly, does one offer better protection than the other? In short, the answer is no. But in order to understand why, we must start by understanding what these terms mean and why they were applied to FR fabric in the first place.
Definition & Engineering
“Inherent” FR refers to a fabric that has FR properties—defined by the fabric’s ability to self-extinguish when the ignition source is removed—by its very nature, as a core property. In other words, a fabric is FR without any additional finishing. “Treated” FR on the other hand, refers to a fabric that has been engineered with flame-retardant chemistry to have FR properties that were not present prior to the treatment.
There are 3 levels at which FR properties can be achieved:
• The Molecular Level – Synthetic derivatives are engineered at the molecular level to be FR (e.g., Nomex, Kermel, Twaron, Kevlar, etc.)
• The Fiber Level – At this level, flame-retardant chemicals are added to the process prior to the fiber being extruded (e.g., FR Modacrylics, FR Rayons)
• The Fabric Level – FR properties are permanently imparted into flammable fabrics through a combination of chemical and mechanical processes (e.g., FR Cotton, 88/12)
When these terms were adopted by the FR world over 30 years ago, they reflected the durability of flame resistant technology at that time. Back then, the intent was to imply that “Inherent” was superior to “treated.” Why? Because at one time, it was true. Cotton and other cellulosic materials are naturally flammable, so they do have to undergo a chemical process, or “treatment,” to impart FR properties. And these early “treated” garments did lose their FR properties over time and after repeated washings. Treated fabrics, prior to 1987, could not compete with aramids as a durable FR alternative.
Over the past 30 years, however, we’ve made dramatic advancements in FR technology that have blurred the lines between these two terms. “Inherent” and “treated” have become so common and so misused that the terms now create more confusion than clarity. Most popular FR fabrics today are blends of several different fibers, and this has created confusion on where and when to apply the current labels. Because “inherent” and “treated” refer to single fiber types, they fail to accurately represent today’s complex blends—which sometimes combine all 3 engineering levels. For example, what should we call a fabric that is 35% Aramid (engineered at the molecular level) and 65% FR cotton (engineered at the fiber level)? When a fabric is a combination of both inherent and treated FR fabrics, and with no rules in place about how to apply the terms, they become more confusing than helpful.
FR technology has come a long way. The fabrics in use today are far superior to those of just a generation previous, and the terms we use to discuss them must make the same evolution. The bottom line is, when it comes to selecting FR fabrics, the most important considerations should always be protection, comfort and durability. No matter which fabric you select, be sure that you can count on the FR properties to last, wash after wash. Bulwark offers an FR guarantee for the lifetime of the garment, on all of our products. To ensure your safety program does what it’s supposed to do: keep you and your guys safe.
“How do I help my guys stay cool in the hot summer months?” That may be the #1 question we at Bulwark receive this time of year, every year. The world’s #1 FR brand is here to help guide you with some cold, hard facts.
1. Remember the 3 Rs: Rehydrate, Rest and Recognize
Rehydrate: Drink cool water often and before you feel thirsty.
Rest: Take breaks in shaded/air-conditioned areas: Especially when daytime temps are at their peak. Shorter, more frequent work/rest cycles are best.
Recognize: Learn to recognize the symptoms of heat-related illness in yourself and others; and report concerns immediately.
2. NEVER Cheat In The Heat
Keep shirts buttoned, sleeves rolled down, and tucked in. FR clothing can only protect you if worn properly.
3. The Right Base Layers Boost Comfort
Wicking base layers move perspiration from the skin outward, to allow for faster evaporation, and constant comfort.
An FR base layer adds protection and might even allow for the use of a lighter weight shirt without sacrificing ATPV/ Protection.
ALWAYS select a base layer that is flame resistant or at least 100% cotton
If you serve the Oil & Gas industry, then you’re likely familiar with NFPA® 2112. It’s the industry consensus standard that lays out the requirements for FR garments to enter the market, including the capabilities and characteristics of the fabrics, the construction of the garment and more. Read our fact sheet to learn more about the changes to this important document’s 2018 revision.
Layered FR systems are a great way to keep your team safe and compliant—especially as the weather turns cold. But FR layering can get tricky, and when gear is layered improperly it can undercut the protection it is designed to provide. Recent updates to FR layering standards have added greater confusion to an already complicated topic. That’s why our FR experts have compiled a list of their top five layering tips, complete with the cited standards, so you can easily find the information that’s relevant to your business.