Package dyeing dyebath reuse

Georgia Tech did not possess modern pressure fabric dyeing equipment at the initiation of the dyebath reuse research. Therefore, to determine the feasibility of dyebath reuse in the general area of coloration of 100% polyester under pressure with disperse dyes, research was initiated on available package yarn equipment. 

A model package dyeing plant constructed for the cost/benefit analysis of applying dyebath/auxiliary bath reuse to pressure package dyeing was assumed to have the following ... 

Table XXV. Capital Equipment and Operating Cost Estimate for Dyebath Reuse Applied to Polyester Package Dyeing...

Table XXVI. Combined Cost Savings in Adaptation of Dyebath Reuse to Polyester Package Dyeing at 1.35 x 10 lb./yr. Production...

Dyebath/auxil iary bath reuse has been demonstrated on a pilot-scale to be a feasible, economical alternative to conventional batch dyeing processes. Atmospheric disperse dyeing of nylon and polyester carpet and nylon pantyhose, and pressure disperse dyeing of polyester yarn packages have all been demonstrated as suitable candidates for plant incorporation of the reuse techniques. 

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