This procedure provides medium fastness for medium to heavy shades.  A one-bath/one-step procedure is available for light to medium shades with lower fastness.

In any procedure involving Spandex^®, the temperature should not exceed 200°F(93°C) as it may degrade the integrity of the spandex.

1. Prepare goods as necessary. Since the Spandex^® typically comes from the factory in a clean white state, a general prescour should be sufficient.  The cotton portion will probably require a scouring and possibly a bleaching if light or pastel shades are desired.
2. In a fresh bath at 100°F(38°C), add:
   • X % owg     Orcolan Neutral™ dyes properly prepared
   • 5 % owg     Ammonium Sulfate
   • 1 % owg     Orco Salt O Solution™
3. Circulate for 10 minutes.
4. Slowly raise temperature to 190-195°F(88-90°C) and run for one hour. After 30 minutes, acetic acid may be added to promote exhaustion of the dye.
5. Cool the bath to 140°F(60°C) and add:
   • 5 % owg     Glauber’s Salt
   • X % owg     Orcolitefast™ dyes properly prepared
6. Adjust pH to 8.5 with soda ash, slowly raise temperature to 190-195°F(88-90°C), and run for 30 minutes.
7. Over 45 minutes, add 30% owg Glauber’s Salt in three equal increments.
8. Cool bath to 120°F(49°C) and overflow rinse cold until clear.

Download This Information