This triggers the release of histamines and other inflammatory chemicals from mast cells in the surrounding tissue. When this material is cut, sanded, or disturbed, the ends of the fibers fray, creating countless needle-like points.
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These particles irritate the mucous membranes of the nose, throat, and lungs, triggering a cough or a tickling sensation that feels like a constant need to clear the throat. Even if they do not pierce deeply, their abrasive nature stimulates the tactile receptors, or mechanoreceptors, located in the skin.
During manufacturing, these fibers are woven into mats or batts, creating a rigid but lightweight structure. When fiberglass penetrates the skin, the immune system recognizes these glass fragments as foreign objects or irritants.
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When disturbed, microscopic fibers become suspended in the dust and can be inhaled. When the tiny filaments come into contact with the epidermis, they can physically penetrate the stratum corneum, the outermost layer of dead skin cells.
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