The transition from rolls of FR fabrics to cut pieces having various sizes and shapes to the assembly of a finished FR protective garment requires an understanding about structural integrity. Essentially, this means answering the question: How well do the cut pieces that are joined together with FR sewing thread compare to the strength and performance of the FR fabric being used to make the garment, before the fabric was cut?
The functions performed by this technically-engineered strand of yarn start with the production processes used to manufacture a garment. Later, yarn functions factor into the service life of the garment.