The
highly amorphous structure of Bemberg fiber enables efficient
dyeing at atmospheric pressure and outstanding color development in
selected hues, values, and saturations, with either direct or reaction
dyes.
Fiber microstructure
|
Because of its more porous,
more amorphous structure, Bemberg exhibits faster dye
takeup and greater saturation than cotton, ramie, and rayon.
| Bemberg™ |
 |
| Cotton |
 |
|
Dye takeup and saturation level
Note. Because
of its fast initial dye takeup, stepwise addition of neutral salt
and alkaline agent is recommended for Bemberg, and a dye
retardant or leveling agent may also be necessary.
|
General guideline on dye type for optimum color development and fastness
 |
Natural |
Regenerated |
Semi-
Synthetic |
Synthetic |
Dyeing
temp. |
Cotton,
remie |
Wool |
Silk |
Bemberg™ |
Rayon |
Acetate |
Nylon66 |
Polyester |
Acrylic |
| Dispersing |
 |
 |
|
|
|
 |
|
|
|
Acetate
80℃
Polyester
130℃ |
Metal
complex |
|
|
|
|
|
|
|
|
|
90-100℃ |
| Acidic |
|
|
|
|
|
|
|
|
|
90-100℃ |
| Reactive |
|
|
|
 |
|
|
|
|
|
60-80℃ |
| Cationic |
|
|
|
|
|
|
|
|
|
100℃ |
| Direct |
|
|
|
|
|
|
|
|
|
85-90℃ |
|
