Patent ID: 7575783
Filing Date: 2009-08-18
Classification: A41D,D06B,D06M,Y10T

Abstract:
1. A method of treating a textile product to impart flame retardant properties, said method comprising the steps of: providing a fabric formed of yarns of rayon continuous filaments, the yarns having outer filaments along the periphery of the yarn and inner filaments in the interior of the yarn, directing the fabric into and through a pad bath containing a phosphorus-based flame retardant compound, compressing the fabric with a first set of cooperating rolls to force the flame retardant compound into the fabric and to impregnate the yarns of the fabric, subsequently compressing the fabric with a second set of cooperating rolls to effect a second forcing of the flame retardant compound into the fabric and to impart an additional impregnation of the yarns of the fabric by the flame retardant compound so that the outer filaments of the yarns have a phosphorus content at least 25% by weight greater than the inner filaments; and curing the flame retardant compound on the fabric to render it insoluble and durably affixed to the fabric.