Abstract: A rapid bleaching process for cellulosic materials such as cotton and cotton blends. The bleaching liquor includes a mixture of hydrogen peroxide, potassium hydroxide and a stabilizer combined with controlled time and temperature to produce a rapid bleach in about 10 minutes or less. The resulting textile goods are soft, absorbent, mote-free with a Hunter Scale Whiteness Value of greater than about 110 and less than about 0.65% extractable solids.

Abstract: A rapid bleaching process for cellulosic materials such as cotton and cotton blends. The bleaching liquor includes a mixture of hydrogen peroxide, potassium hydroxide and a stabilizer combined with controlled time and temperature to produce a rapid bleach in about 10 minutes or less. The resulting textile goods are soft, absorbent, mote-free with a Hunter Scale Whiteness Value of greater than about 110 and less than about 0.65% extractable solids.

Abstract: A silicate-free liquid composition for use in bleaching cellulosic compositions, including cotton and cotton blended fabrics, comprised of hydrogen peroxide, potassium hydroxide, and optionally, a stabilizer which may be a magnesium salt formed from a mixture of magnesium oxide and citric acid.

Abstract: A rapid, low temperature bleaching process for cellulosic materials such as cotton and cotton blends. The bleaching liquor includes a mixture of hydrogen peroxide, potassium hydroxide and a stabilizer combined with controlled time and temperature to produce a rapid bleach in between about 12 and 16 minutes. The resulting textile goods are soft, absorbent, mote-free with a Hunter Scale Whiteness Value of about 100 and less than about 0.75% extractable solids.

Abstract: A conventional tunnel-type continuous batch washer modified for use as a commercial bleaching machine. The washer is modified by (1) lowering the rotational oscillation angle and speed of the machine's inner drum structure relative to its normal washing settings; (2) altering the water counterflow positioning and characteristics; (3) maintaining the water in the various inner drum section modules at essentially identical, relatively high levels; and (4) modifying the bath temperature characteristics of the machine. When utilized as a commercial bleaching machine the modified tunnel washer has a prescour zone disposed at its inlet end, a bleach zone downstream of the prescour zone and into which a hydrogen peroxide bleaching solution is injected, a finish zone disposed at its outlet end and into which a softening agent is injected, and a water-only rinse zone positioned between the bleach and finish zones.

Abstract: A rapid bleaching process for cellulosic materials such as cotton and cotton blends. The bleaching liquor includes a mixture of hydrogen peroxide, potassium hydroxide and a stabilizer combined with controlled time and temperature to produce a rapid bleach in about 10 minutes or less. The resulting textile goods are soft, absorbent, mote-free with a Hunter Scale Whiteness Value of greater than about 110 and less than about 0.65% extractable solids.

Abstract: A conventional tunnel-type continuous batch washer modified for use as a commercial bleaching machine. The washer is modified by (1) lowering the rotational oscillation angle and speed of the machine's inner drum structure relative to its normal washing settings; (2) altering the water counterflow positioning and characteristics; (3) maintaining the water in the various inner drum section modules at essentially identical, relatively high levels; and (4) modifying the bath temperature characteristics of the machine. When utilized as a commercial bleaching machine the modified tunnel washer has a bleach zone disposed at its inlet end and into which a hydrogen peroxide bleaching solution is injected, a finish zone disposed at its outlet end and into which a softening agent is injected, and a water-only rinse zone positioned between the bleach and finish zones. Each of these three zones is defined by one or more inner drum structure modules which may be tandem or single batch modules.

Abstract: A conventional tunnel-type continuous batch washer is modified for use as a commercial bleaching machine by (1) lowering the rotational oscillation angle and speed of the machine's inner drum structure relative to its normal washing settings; (2) altering the water counterflow positioning and characteristics; (3) maintaining the water in the various inner drum section modules at essentially identical, relatively high levels; and (4) modifying the bath temperature characteristics of the machine. When utilized as a commercial bleaching machine the modified tunnel washer has a bleach zone disposed at its inlet end and into which a hydrogen peroxide bleaching solution is injected, a finish zone disposed at its outlet end and into which a softening agent is injected, and a water-only rinse zone positioned between the bleach and finish zones. Each of these three zones is defined by one or more inner drum structure modules which may be tandem or single batch modules.