In metal stamping, glass handling, and meat processing, workers rely on gloves made from DuPont Kevlar and other aramid fibers to prevent severed tendons. These fibers are five times stronger than steel by weight. However, aramid fibers have a molecular kryptonite that destroys their tensile strength instantly: Chlorine Bleach (Sodium Hypochlorite).
At the end of a shift, cut-resistant gloves are often soaked in grease, blood, or cutting fluid. To get them clean and sanitized, workers or industrial laundry services toss them into a washing machine with heavy doses of chlorine bleach. This is a catastrophic mistake.
Chlorine is a highly reactive oxidizer. When it comes into contact with the poly-paraphenylene terephthalamide chains of Kevlar, it aggressively attacks the amide bonds, chlorinating the polymer and snapping the molecular chains. The bleach literally dissolves the fiber from the inside out.
The damage is invisible to the naked eye initially. The glove looks clean and bright white. But the structural integrity is gone. The fibers become brittle and weak. The first time a worker wearing a bleach-degraded glove grabs a sharp sheet metal edge, the Kevlar yarns simply part like wet paper, resulting in a deep, disabling laceration.
The Maintenance Protocol: Never expose aramid or para-aramid cut gloves to chlorine bleach, chlorinated solvents, or highly alkaline detergents (pH > 10). They must be washed in warm water using only mild, non-bleach detergent. If a glove has been exposed to bleach, it must be immediately destroyed. A simple way to test for chlorine degradation is to pinch a piece of the outer yarn and pull; if it snaps easily or feels "crunchy" instead of stretching slightly, the chemical structure has been compromised. Clean gloves are pointless if they can't stop a knife.
