Abstract
Conventionally decorative quality jute furnishing fabrics are dyed and then chemically finished as per functional requirement by two step sequential process. An attempt has been made to combine these two step process into a single step process by developing simultaneous (combined) dyeing (acid dyeing) and fire-retardant finishing process in one step by pad-dry-cure method. H2O2 bleached jute fabric has been dyed with selective acid dyes (1%) and chemically finished with different concentrations of Ortho-Phosphoric Acid, Ammonium sulphamate and Di-ammonium phosphate for fire retardant finish, by both conventional two-step sequential process and single-step simultaneous process by pad-dry-cure technique. One-step simultaneous application of Ortho-Phosphoric Acid, Ammonium sulphamate and Di-ammonium phosphate along with 1% acid dye on H2O2 bleached jute fabric shows an improvement in the surface colour strength compared to that of ordinary H2O2 bleached jute fabric when separately dyed with 1% acid dye and subsequently finished the same fire retardant agent. Both the process two stage conventional acid dyeing and fire-retardant finish and single stage simultaneous pad-dry-cure process of acid dyeing and fire retardant finish, show at par fire retardant performance. This single bath technique thus offers advantages of reduction in processing cost, saving in energy and reduction in time of treatments as well as better colour value and at per fire retardant performance.
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