Property imparted by treatment of substrate with chemicals that prevent the substrate from promoting the spread of a flame, should the substrate catch fire. Substrates used for wallcoverings and curtains, paper-based garments, hats, tablecloths, streamers, or other party favors all must be flame retardant. Often, government ordinances require substrates used for such purposes to be flame retardant. Flame retardant substrates are not fireproof, however; flame resistance merely allows a flame to be contained, not avoided completely.
Flame resistance is quantitatively gauged by the length of time an ignited paper continues glowing, and the size of the remaining portion of paper once the flame has ceased.
Their are different test methods used in the industry.
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