Process

%

Chemical

^oC

Time(min)

PH

Comments

Washing

200

Water

40

0.5

Rockol 642

0.3

Formic  acid

30

Drain

100

Water

35

0.5

Sodium formate

20

Retannage I

2

Rockytan RE-540

30

2

Chrome ( 26 / 33 )

2

Rockytan RHN

60

0.5

Sodium formate

60

0.3

Rockytan TAK

30

4.4

Drain

150

Water

35

Neutralization

1

Sodium formate

30

1

Rockytan TAK

60

5.2

Check Ø with B.C.G

Drain

80

Water

35

Dyeing

3

Dye(Black NT)

60

Check Ø penetration

3

Rockytan RD

30

2

Rockytan RR7

30

1

Rockytan LF

30

2

Rockytan RP2

30

Add

50

Water

60

Fatliquoring

2.5

Rockol LNE-918

3.5

Rockol CS-414

2.5

Rockol OFM-345

2.5

Rockol OPS-322

60

1.5

Formic acid

2×15

3.7

1.0

Rockytan LF

15

Drain

Washing

200

Water

20

5