Federal Register :: Rules and Regulations Under the ...
2002-2-15 · DuPont maintains that the ability of a yarn to recover effectively after being stretched is the key to producing quality stretch fabric. Air jet covered (AJC) spandex yarn (40d spandex with 150d polyester) having 9% by weight spandex was used as a yarn to benchmark recoverable stretch performance to provide quality stretch and recovery.
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