Process

%

Chemical

^oC

Time(min)

PH

Comments

Washing

200

Water

40

0.3

Rockol 642

0.3

Formic acid

20

Drain

100

Water

35

Rechroming

4

Chrome ( 26 / 33 )

0.3

Sodium formate

45

1.5

Rockenal DC

30

0.7

Sodium formate

30

O.N(stop 1hr-Run 2 min)

Drain

100

Water

35

Neutralization

1.5

Rockytan RPR

45

0.5-1

Rockytan TAK

30

5

Check Ø with B.C.G

Drain

Washing

300

Water

35

10

Drain

80

Water

35

Retannage

3

Rockytan RE-540

30

4

Rockytan RR7

20

1

Rockytan RD

20

2

Rockytan ROS

2

Rockytan LF

1.5

Mimosa extract

Dyeing

4

Dye

45

Check Ø penetration

Add

50

Water

60

Fatliquoring

1

Rockol CS-414

2

Rockol LNE-918

3

Rockol LNP-375

2

Rockol OFL

60

1

Formic acid

2×15

3.6

Drain

Top dyeing

80

Water

60

0.5

Dye

10

0.5

Formic acid

10

4.0

0.7

Rockytan DCS-595

15

Drain

Washing

200

Water

20

5